I just wanted to know what to study for biology paper 1?
Thanks in advance
what i did and really made me more confident with the paper is that i did 2-4 past papers and recorded my results and look if you get more than 35/40 without revising then ur doing great and the 5 marks you lost you could then dig out those topics and then flick throuh the notes to refresh ur memory about it anf i guarantee u'll do great. Gd luck
Hey IG boy.. i was having problem with understand the digestion process.. plz write me the complete process.. cud u plz help me..thanks in advance.!!
Hey IG boy.. i was having problem with understand the digestion process.. plz write me the complete process.. cud u plz help me..thanks in advance.!!
ok man its not a problem and its simple look first of all the digestion starts in the mouth with chemical and mechanical digestion. Amylase is used to break down starch to glucose and theeth is used to grind and chew food. Food is pushed down the oesophagus through perstalisis then enters the sotmach chemical digestion happens here... Pepsin breaks down the protiens to amino acids and HCl is used to denature the amalyse from the mouth.
I Hope it helps!
It's A cuz when sewage enters the river it promotes growth of algae and bacteria feed on them;use up a lot of oxygen. But as u go downstream most of the nutrients in the sewage r either used up or fed upon by bacteria......so the groeth of algae and number of bacteria decrease and this restores the level of oxygen.
Tell me if u didn't get it
The table shows the percentage of protein, fat and carbs in 4 samples of dried food.
Which has the highest energy
Protein fat carbs
A. 76 9 15
B. 17 0 83
C. 33 32 35
D. 15 85 0
I said D. Is that the correct answer?
I lost the first page so I dont know what year it is. Can someone tell me which year and month the paper is?
k thanks. How about question 16? Whats the ans to that?anytime.
morning nid.
any idea how to break a password protected file..
i got some bio notes
but all are password protected
./??
morning nid.
any idea how to break a password protected file..
i got some bio notes
but all are password protected
./??
ok Thanks nid and .... (you should really change ur username. It makes it easier for ppl to address you). I took a guess that the answer was D since it had the highest fibre. One MORE thing. Question 29. Is it D again? I dont really get the question in the first place.
ok Thanks nid and .... (you should really change ur username. It makes it easier for ppl to address you). I took a guess that the answer was D since it had the highest fibre. One MORE thing. Question 29. Is it D again? I dont really get the question in the first place.
K thanks, but both of you didnt understand when i said "ok Thanks nid and .... (you should really change ur username. It makes it easier for ppl to address you)." Theres another guy who helped me with my first question. His username is "....". When insanity stricken answered my question i thought it was him replying. I completely ignored the username :S. But anyways, thanks insanity-stricken, nid, and ....ok Thanks nid and .... (you should really change ur username. It makes it easier for ppl to address you). I took a guess that the answer was D since it had the highest fibre. One MORE thing. Question 29. Is it D again? I dont really get the question in the first place.
yea, thought of that too..but i dont really have any good nic :S
and umm, 29 is C..body cells is obvious, cuz its a male, has to be XY, sperm cell..50% carry X, 50% carry Y..so its X or Y
K thanks, but both of you didnt understand when i said "ok Thanks nid and .... (you should really change ur username. It makes it easier for ppl to address you)." Theres another guy who helped me with my first question. His username is "....". When insanity stricken answered my question i thought it was him replying. I completely ignored the username :S. But anyways, thanks insanity-stricken, nid, and ....ok Thanks nid and .... (you should really change ur username. It makes it easier for ppl to address you). I took a guess that the answer was D since it had the highest fibre. One MORE thing. Question 29. Is it D again? I dont really get the question in the first place.
yea, thought of that too..but i dont really have any good nic :S
and umm, 29 is C..body cells is obvious, cuz its a male, has to be XY, sperm cell..50% carry X, 50% carry Y..so its X or Y
i hav a doubt guys.
"in an unborn child, there is a hole in the septum b/w the left and right atria. What is the purpose of this?"
hey how r u all?
cud u tell me if a leaf is an organ ? ???
thanks dude u rock!+rep for uhey how r u all?
cud u tell me if a leaf is an organ ? ???
yes, leaf is an organ, because it contains different tissues (Layer of palisade cells, spongy mesophyll cells, epidermal cells)
here u go
three kinds of cardiac holes — Patent Foramen Ovales (PFOs), Ventricular Septal Defects (VSDs) and Fenestrated Fontans (FFs). PFOs are holes in the heart needed before birth to transfer oxygenated blood from the umbilical cord to the unborn child; if a PFO remains open after birth, it creates a pathway for blood clots. VSDs are abnormal openings between the heart’s chambers that can lead to heart failure. An FF defect results from the Fontan procedure which corrects congenital cardiac defects in people born with three chambered hearts but creates a fenestration, or window-like hole, that eventually must be closed.
here u go
three kinds of cardiac holes — Patent Foramen Ovales (PFOs), Ventricular Septal Defects (VSDs) and Fenestrated Fontans (FFs). PFOs are holes in the heart needed before birth to transfer oxygenated blood from the umbilical cord to the unborn child; if a PFO remains open after birth, it creates a pathway for blood clots. VSDs are abnormal openings between the heart’s chambers that can lead to heart failure. An FF defect results from the Fontan procedure which corrects congenital cardiac defects in people born with three chambered hearts but creates a fenestration, or window-like hole, that eventually must be closed.
err. . . we dont have to know this do we? never saw it on the syllabus . . .
hey need yr help its jun 2003 p1 q31 can somone explain tht 2 me n ya does neone hv 2002 p1ms of bth jun n nov plzz respond....requirement is urgent
hey thx i gt it a +rep fr u thx a lot hmm do u hv 2002 p1 ms if yes then pm me or neone plz attach ithey need yr help its jun 2003 p1 q31 can somone explain tht 2 me n ya does neone hv 2002 p1ms of bth jun n nov plzz respond....requirement is urgent
well..heteorygous brown eyes woman, and blue eyes man..and allele for brown eye is dominant..so if we assume tht brown allele is B, and blue allele is b..then, the woman is Bb and the man is bb
after we cross the Bb with bb..the offspring are Bb Bb bb bb...ratio is 1:1...so that means..for blue eyes (bb), probability is 1 in 2 (50%) that is A
hope you understand.
well for those who do need mark schemes of june and nov 2002..i think the site has the examiner reports for these years..the answers are in the examiners reports..get them from there...also some comments on the hard questions..hey if u hv it then attatch na plzzz need it urgently
hey thx i gt it a +rep fr u thx a lot hmm do u hv 2002 p1 ms if yes then pm me or neone plz attach ithey need yr help its jun 2003 p1 q31 can somone explain tht 2 me n ya does neone hv 2002 p1ms of bth jun n nov plzz respond....requirement is urgent
well..heteorygous brown eyes woman, and blue eyes man..and allele for brown eye is dominant..so if we assume tht brown allele is B, and blue allele is b..then, the woman is Bb and the man is bb
after we cross the Bb with bb..the offspring are Bb Bb bb bb...ratio is 1:1...so that means..for blue eyes (bb), probability is 1 in 2 (50%) that is A
hope you understand.
Did any1 knows the curve of november 08 paper 1?its 34 fr an a
sorry i don't have june2002hey thx n ya thx igstudent 09 2
I DO PAST PAPERS 2000-2008
THATS IT? studying for paper1 done?
I DO PAST PAPERS 2000-2008
THATS IT? studying for paper1 done?
Yes i think thats enough and heck ur results if theyre higher than 35 then thats great and revise the topics you got wrong in that will be the best revision. gd luck
1 A 21 Cthx again
2 B 22 C
3 C 23 B
4 B 24 D
5 C 25 C
6 B 26 D
7 D 27 C
8 B 28 B
9 A 29 A
10 D 30 C
11 B 31 A
12 D 32 B
13 B 33 A
14 C 34 B
15 B 35 D
16 A 36 D
17 A 37 D
18 C 38 B
19 B 39 A
20 C 40 C
for june 2002..
i hav a doubt guys.The septum is a tissue that prevents the deoxygenated blood in the right side of the heart from the oxygenated blood in the leftside of the heart
"in an unborn child, there is a hole in the septum b/w the left and right atria. What is the purpose of this?"
in dialysis machine....the blood flows from da person in da dialysis machine from which blood vessel?artery or vein?and flows back in da body from which vessel?
in which structures are simple sugars produced?
chloroplasts
cytoplasm
vacuole
at which level of organisation is an artery
cell
organ
organ system
tissue
what is the source of energy for water plants
mineral salts
small fish
sunlight
water
help sum1
in which structures are simple sugars produced?
chloroplasts
cytoplasm
vacuole
at which level of organisation is an artery
cell
organ
organ system
tissue
what is the source of energy for water plants
mineral salts
small fish
sunlight
water
help sum1
cud sum1 explain the nitrifying denitrifying nitrogen fixing bacteria?would sum1 please answer me?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >:(
wat does the nucleus in every body cell of a male contain?
X allele
y allele
y chromosome
y gene
ask the ques in chem and bio help threadkk thanks u r life saver
cuz nids there
cud sum1 explain the nitrifying denitrifying nitrogen fixing bacteria?would sum1 please answer me?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >:(
wat does the nucleus in every body cell of a male contain?
X allele
y allele
y chromosome
y gene
cud sum1 explain the nitrifying denitrifying nitrogen fixing bacteria?would sum1 please answer me?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >:(
wat does the nucleus in every body cell of a male contain?
X allele
y allele
y chromosome
y gene
Nitrifying bacteria converts the nitrogen in the air (in the soil) in to nitrate ions which is a source of protiens for plants.
Denitrifying bacteria converts these nitrate ions back into nitrogen and releases it in the air.
Y allele
cud sum1 explain the nitrifying denitrifying nitrogen fixing bacteria?would sum1 please answer me?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >:(
wat does the nucleus in every body cell of a male contain?
X allele
y allele
y chromosome
y gene
Nitrifying bacteria converts the nitrogen in the air (in the soil) in to nitrate ions which is a source of protiens for plants.
Denitrifying bacteria converts these nitrate ions back into nitrogen and releases it in the air.
Y allele
cud sum1 explain the nitrifying denitrifying nitrogen fixing bacteria?would sum1 please answer me?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >:(
wat does the nucleus in every body cell of a male contain?
X allele
y allele
y chromosome
y gene
Nitrifying bacteria converts the nitrogen in the air (in the soil) in to nitrate ions which is a source of protiens for plants.
Denitrifying bacteria converts these nitrate ions back into nitrogen and releases it in the air.
Y allele
hmmm..not right.....Nitrogen-fixing bacteria convert nitrogen in air to ammonium compounds and nitrifying bacteria convert ammonium compounds to nitrates and nitrites. Denitrifying bacteria converts the ions back to nitrogen.
It's Y chromosome
Allele is an alternative form of a gene. Chromosomes r responsible for the resulting gender. Males contain 1 X and 1Y chromosome and females have both X chromosomes
movement of sugars up to the leavesTHANK YOU! always been confused with it
np ;Dmovement of sugars up to the leavesTHANK YOU! always been confused with it
Can someone explain-> what is translocation?
what is a binomial system ?
what is a binomial system ?the scientific name of an organism using Genus and species(two names so binomial)
It is called from the (source) the place it was made to the sink( the place where its stored or used up)Oh thanks for that, jus' saw it in the 2007 oct/nov paper1 :)
The table shows the percentage of protein, fat and carbs in 4 samples of dried food.
Which has the highest energy
Protein fat carbs
A. 76 9 15
B. 17 0 83
C. 33 32 35
D. 15 85 0
I said D. Is that the correct answer?
I lost the first page so I dont know what year it is. Can someone tell me which year and month the paper is?
the answer is D because of the high fat contentThe table shows the percentage of protein, fat and carbs in 4 samples of dried food.
Which has the highest energy
Protein fat carbs
A. 76 9 15
B. 17 0 83
C. 33 32 35
D. 15 85 0
I said D. Is that the correct answer?
I lost the first page so I dont know what year it is. Can someone tell me which year and month the paper is?
hey, i just did this paper, its may/june 2004 i wrote C
the answer is D because of the high fat contentThe table shows the percentage of protein, fat and carbs in 4 samples of dried food.
Which has the highest energy
Protein fat carbs
A. 76 9 15
B. 17 0 83
C. 33 32 35
D. 15 85 0
I said D. Is that the correct answer?
I lost the first page so I dont know what year it is. Can someone tell me which year and month the paper is?
hey, i just did this paper, its may/june 2004 i wrote C
Continous is the variation which changes during time, like youe height, weight......\
Discountinous varitation is the one which doesnt change during time, like the gender,blood group...
Continous is the variation which changes during time, like youe height, weight......
Discountinous varitation is the one which doesnt change during time, like the gender,blood group...
can somebody explain .. question 25 m/j 2007 ??negative geotropism, is the response, that is away from gravity..so that must be D.
can somebody explain .. question 25 m/j 2007 ??negative geotropism, is the response, that is away from gravity..so that must be D.
Continous is the variation which changes during time, like youe height, weight......
Discountinous varitation is the one which doesnt change during time, like the gender,blood group...
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
what did you'll write for direction of water flow in the plant?? which letter?? the question where there were circles marked on the plant..
and what did you put for the function of the cilia?? traps bacteria or moves mucus??
And the question where the paper is blue in colour which turns pink when in gets in contact with water?? whch plant?? X or Y??..
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
i marked..lacks water and artrey only..is it right??
what did you'll write for direction of water flow in the plant?? which letter?? the question where there were circles marked on the plant..
and what did you put for the function of the cilia?? traps bacteria or moves mucus??
And the question where the paper is blue in colour which turns pink when in gets in contact with water?? whch plant?? X or Y??..
the answer was A fir direction .....function of cilia was moving mucus....the blue to pink was the plant X under the leaf...
what did you'll write for direction of water flow in the plant?? which letter?? the question where there were circles marked on the plant..
and what did you put for the function of the cilia?? traps bacteria or moves mucus??
And the question where the paper is blue in colour which turns pink when in gets in contact with water?? whch plant?? X or Y??..
the answer was A fir direction .....function of cilia was moving mucus....the blue to pink was the plant X under the leaf...
what did you'll write for direction of water flow in the plant?? which letter?? the question where there were circles marked on the plant..
and what did you put for the function of the cilia?? traps bacteria or moves mucus??
And the question where the paper is blue in colour which turns pink when in gets in contact with water?? whch plant?? X or Y??..
what did you'll write for direction of water flow in the plant?? which letter?? the question where there were circles marked on the plant..I think i put A for the circle thing...
and what did you put for the function of the cilia?? traps bacteria or moves mucus??
And the question where the paper is blue in colour which turns pink when in gets in contact with water?? whch plant?? X or Y??..
the answer was A fir direction .....function of cilia was moving mucus....the blue to pink was the plant X under the leaf...
B. A was referring to vascular bundle- there are cells above the vein so it would only be down hence the stomata
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
i marked..lacks water and artrey only..is it right??
veins and arteries, and fat
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
i marked..lacks water and artrey only..is it right??
veins and arteries, and fat
it lacks water cuz phloem can not caarry water n they said amphids are sent through phloem....therefore lacks water
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
i marked..lacks water and artrey only..is it right??
veins and arteries, and fat
it lacks water cuz phloem can not caarry water n they said amphids are sent through phloem....therefore lacks water
its not water its fats,.. because the phloem has some water along with the amino acids.. but the plants has no fat..so fats is a more suitable answer
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
i marked..lacks water and artrey only..is it right??
veins and arteries, and fat
it lacks water cuz phloem can not caarry water n they said amphids are sent through phloem....therefore lacks water
its not water its fats,.. because the phloem has some water along with the amino acids.. but the plants has no fat..so fats is a more suitable answer
damm ru sure?
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
i marked..lacks water and artrey only..is it right??
veins and arteries, and fat
it lacks water cuz phloem can not caarry water n they said amphids are sent through phloem....therefore lacks water
its not water its fats,.. because the phloem has some water along with the amino acids.. but the plants has no fat..so fats is a more suitable answer
damm ru sure?
no
phoem contain fats
http://www.youtube.com/watch?v=6Q0hV40UQjg
check this out
the paper was eazy thought i messed 3 questions...guys just a hint study..wat amphids lack in their diet...and also..which vessels carry glucose frm kidney lolz....umm wat else...yea so no more hints...gud luk..
i marked..lacks water and artrey only..is it right??
veins and arteries, and fat
it lacks water cuz phloem can not caarry water n they said amphids are sent through phloem....therefore lacks water
its not water its fats,.. because the phloem has some water along with the amino acids.. but the plants has no fat..so fats is a more suitable answer
damm ru sure?
no
phoem contain fats
http://www.youtube.com/watch?v=6Q0hV40UQjg
check this out
so if phloem contains fat then the ans is water ...wooohooooo!
phloem tubencarries sugar fats and proteins according to the youtube thingy
and if it was fats then why couldnt it be amino acids cuz it was one of the choices there right and they kinda are the same
oh ok
anyway i got aquestion
what is the role of lacteals and capillaries in the villi?
thx in advance
oh ok
anyway i got aquestion
what is the role of lacteals and capillaries in the villi?
thx in advance
lacteals absorb fatty acids and glycerol and capillaries absorb glucose
oh ok
anyway i got aquestion
what is the role of lacteals and capillaries in the villi?
thx in advance
lacteals absorb fatty acids and glycerol and capillaries absorb glucose
capillaries absorb glucose and amino acids right?
hey...
is water a type of food?
hey...
is water a type of food?
im guessing it is
cuz the exam specifically asked for the type of food
funny eh?
hey...
is water a type of food?
im guessing it is
cuz the exam specifically asked for the type of food
funny eh?
i hve been thinking for this answer...
and...
water is type of drinks...not FOOD..
if the answer is food..then..
u guys should say..." eat the water"..
LOL ;D
hey...
is water a type of food?
im guessing it is
cuz the exam specifically asked for the type of food
funny eh?
i hve been thinking for this answer...
and...
water is type of drinks...not FOOD..
if the answer is food..then..
u guys should say..." eat the water"..
LOL ;D
yupyup
most likey
its weird innit?
its water..phloem transports food downwards and xylem transports water downwards...i got it wrong too...:(...wat waz da answer 4 the healthy person's kidney??i got artery And vein...is tht ryt????
hey...
is water a type of food?
im guessing it is
cuz the exam specifically asked for the type of food
funny eh?
i hve been thinking for this answer...
and...
water is type of drinks...not FOOD..
if the answer is food..then..
u guys should say..." eat the water"..
LOL ;D
yupyup
most likey
its weird innit?
i don't think the answer is water...
because..dude, u can find water everywher..
neither for fat..
i just think its amino acids..phloem is mainly transport sucrose...
yaa...i forgot..
nway, im hoping the grade A for all exams for this year will be lower...
lets praying for that u guys..!
yaa...i forgot..
nway, im hoping the grade A for all exams for this year will be lower...
lets praying for that u guys..!
yaa...i forgot..
nway, im hoping the grade A for all exams for this year will be lower...
lets praying for that u guys..!
ill pray for u guys
now pray for me too
and why an A cool dude
an A* will look better on your certificate
It could only be water. Sucrose and amino acids are translocated, says in the syllabus. Phloem tube carry food substances, so, they carry fats. So only choice left is water.
plants doooo have fatsAhh-you're right! Sorry about that-haha :)
check on google if u dont believe me
hey CIE..
u guys should put any Vitamin as one of the answers..
so that, it could be easy to think..
:P
hey CIE..
u guys should put any Vitamin as one of the answers..
so that, it could be easy to think..
:P
ur confusing me
where the hel did u get vitamins from?
hey CIE..
u guys should put any Vitamin as one of the answers..
so that, it could be easy to think..
:P
u know u just turned my head upside down
k yes thts acually good thinking
vitamins
but why vitamins tho?
like why not minerals?
u know u just turned my head upside down
k yes thts acually good thinking
vitamins
but why vitamins tho?
like why not minerals?
ok..fine...
ur ryte..
i just made it up..
dont take it seriously..
n nothing can we do now..
because it was already in past..
:-\
is the fluid that is released from the tear glands called lysosome or lysozyme?
is the fluid that is released from the tear glands called lysosome or lysozyme?
Lysozyme is an enzyme found in the tear drops..
But thats not in the syllabus?!
Or am i not as prepared as i think i might "need" to be..
idk for ur question..
nway, tear fluid is an acid..ryte?
lysozyme-never heard of it-is it in the Biology IGCSE??? ahh now im scared^^ :)dont worry
Okay, so i checked in my CIE Biology syllabus- promising everything for this years exam. There is nothing about that, in fact all you have to learn is the eye its self.. and some details about sight. None of the tearduct multi acidical lyzoresterogmous. hahahaha
No, but all i know about tears, is there a salt solution.. i didnt know they were acidic...
idk for ur question..
nway, tear fluid is an acid..ryte?
never mind
its not on the syllabus
but i wil tell u what it does just in case
it is called lysozyme
and it kills bacteria that form ont the conjunctiva
i hope im right
Okay, so i checked in my CIE Biology syllabus- promising everything for this years exam. There is nothing about that, in fact all you have to learn is the eye its self.. and some details about sight. None of the tearduct multi acidical lyzoresterogmous. hahahaha
No, but all i know about tears, is there a salt solution.. i didnt know they were acidic...
Okay, so i checked in my CIE Biology syllabus- promising everything for this years exam. There is nothing about that, in fact all you have to learn is the eye its self.. and some details about sight. None of the tearduct multi acidical lyzoresterogmous. hahahaha
No, but all i know about tears, is there a salt solution.. i didnt know they were acidic...
It is suggested that acetylsalicylic acid may have found in the tear fluid.
:o
Okay, so i checked in my CIE Biology syllabus- promising everything for this years exam. There is nothing about that, in fact all you have to learn is the eye its self.. and some details about sight. None of the tearduct multi acidical lyzoresterogmous. hahahaha
No, but all i know about tears, is there a salt solution.. i didnt know they were acidic...
It is suggested that acetylsalicylic acid may have found in the tear fluid.
:o
okie is that a real word????
if so, then i dont know anything
and um can someone tell me what a hypothalamus is?
okay where are you guyz getting all these words from ?
cuz its not in the IGCSE BIOLOGY STUDY GUIDE ...and isnt that the hole sylabuss ?
okay where are you guyz getting all these words from ?
cuz its not in the IGCSE BIOLOGY STUDY GUIDE ...and isnt that the hole sylabuss ?
Kam, rep+ right back atcha!
and hypothalamus is something in the brain attaching the nervous system to the endocrine system... Its like the coordinator of the brain..but thats its main function.
thx again cool dude
and is osmoregulation the glycogen thingy? or not?
oh god
:o i suck at this
thx again cool dude
and is osmoregulation the glycogen thingy? or not?
oh god
:o i suck at this
glycogen?..
ermm..osmoregulation> the control of the water content of the body.. :)
thx again cool dude
and is osmoregulation the glycogen thingy? or not?
oh god
:o i suck at this
glycogen?..
ermm..osmoregulation> the control of the water content of the body.. :)
oh right
for the kidney things yeah
i dunno where my brain is
um one more que
sorry i know im a pain
but um
what are the functions of da duodenum and the ileum?
um one more que
sorry i know im a pain
but um
what are the functions of da duodenum and the ileum?
all i know for the ileum is the last part of food is being digested..n mostly absorption occurs in ileum..
duodenum is just same as what happen in stomach..
um one more que
sorry i know im a pain
but um
what are the functions of da duodenum and the ileum?
all i know for the ileum is the last part of food is being digested..n mostly absorption occurs in ileum..
duodenum is just same as what happen in stomach..
right so duodenum digestion
ileum absorption
yey fanks AGAIN
and wot about u guys
it seems like im the only one asking ques
so u going anywhere this summer?
um one more que
sorry i know im a pain
but um
what are the functions of da duodenum and the ileum?
all i know for the ileum is the last part of food is being digested..n mostly absorption occurs in ileum..
duodenum is just same as what happen in stomach..
right so duodenum digestion
ileum absorption
yey fanks AGAIN
and wot about u guys
it seems like im the only one asking ques
so u going anywhere this summer?
my family n I probably spend our summer time in perth..
WoohOo...
im going to england
yes is it nice over there?
or mixed up, notes with past papers?
or mixed up, notes with past papers?
for sure....if u havent already 'kinda' learned your notes..and gotten into Bio mode..then you should definitely spend ur time doing past papers now. :D
Good luckersss
or mixed up, notes with past papers?
for sure....if u havent already 'kinda' learned your notes..and gotten into Bio mode..then you should definitely spend ur time doing past papers now. :D
Good luckersss
shelbers. hey. ti past papers boro na kanw yiati den xero?
or mixed up, notes with past papers?
GUYS!!! The exam is in two days!? This forum should be buzzing!
Other than skin and the kidneys, whats another organ that constitutes to Homeostasis??
Also what is Zona Pellucida (reproduction)
Sorry, im being a pain.
And lets have some predictions..
there was hardly anything on plants, digestion, genes (not much), reproduction, generally not much on humans, nutrition etc..
what else
Also what is Zona Pellucida (reproduction)do we have to learn zona pellucida.. i've never come across it in any of the papers or the syllabus.. but here's the definition anyways..
Sorry, im being a pain.
And lets have some predictions..
there was hardly anything on plants, digestion, genes (not much), reproduction, generally not much on humans, nutrition etc..
what else
Also what is Zona Pellucida (reproduction)do we have to learn zona pellucida.. i've never come across it in any of the papers or the syllabus.. but here's the definition anyways..
Sorry, im being a pain.
And lets have some predictions..
there was hardly anything on plants, digestion, genes (not much), reproduction, generally not much on humans, nutrition etc..
what else
Zona pellucida: The strong membrane that forms around an ovum as it develops in the ovary. The membrane remains in place during the egg's travels through the Fallopian tube. To fertilize the egg, a sperm must penetrate the thinning zona pellucida. If fertilization takes place, the membrane disappears to permit implantation in the uterus.
Also what is Zona Pellucida (reproduction)do we have to learn zona pellucida.. i've never come across it in any of the papers or the syllabus.. but here's the definition anyways..
Sorry, im being a pain.
And lets have some predictions..
there was hardly anything on plants, digestion, genes (not much), reproduction, generally not much on humans, nutrition etc..
what else
Zona pellucida: The strong membrane that forms around an ovum as it develops in the ovary. The membrane remains in place during the egg's travels through the Fallopian tube. To fertilize the egg, a sperm must penetrate the thinning zona pellucida. If fertilization takes place, the membrane disappears to permit implantation in the uterus.
what the hell
we dont need to know that
do we?
well u do need to know wat zona pellucida isAlso what is Zona Pellucida (reproduction)do we have to learn zona pellucida.. i've never come across it in any of the papers or the syllabus.. but here's the definition anyways..
Sorry, im being a pain.
And lets have some predictions..
there was hardly anything on plants, digestion, genes (not much), reproduction, generally not much on humans, nutrition etc..
what else
Zona pellucida: The strong membrane that forms around an ovum as it develops in the ovary. The membrane remains in place during the egg's travels through the Fallopian tube. To fertilize the egg, a sperm must penetrate the thinning zona pellucida. If fertilization takes place, the membrane disappears to permit implantation in the uterus.
what the hell
we dont need to know that
do we?
Which one is xylem and which one is phloem?
Which one is xylem and which one is phloem?
im going to englandengland is a beutifull country :)
yes is it nice over there?
hahaha we get distractd so easily ;)
just 3 mre xmz to go <3
wow 600 awsm ;)hahaha we get distractd so easily ;)
just 3 mre xmz to go <3
2.....for my 600th post
Hey there everyone please post your questions and ill be more than happy to answer any. :)\\
If you need notes there are 3 on different topics on page 2 and if you need more just email me and i'll send you more. Gd luck
hey
cud any1 explain how a potometer and a kidney dailysis machine
works
Thanks
it will b a big help if sum1 answers this
Is Potometer in the Syllubus ?
hiya
yes englands a beautiful place
where r u going this summer
sorry guys but i get distracted easily too so dont be so harsh on me ;D
yup gr8 explanation hmh
i couldnt have put it better myself
What is beautiful about England...?why be negative when u can be positive?
lol england is great but i think getting through bio wud be better :P BIO FTWLol! theres T.V tax! can u believe that! if u dont pay, then u dont watch :P
*seriously england is great.. Weather.. okay rain sukcs.. but still its nice.. okay maybe the tax is a bit high but stil its nice.. :P
lol i heard of tv tax.. but only because i watchd sum english show.. i love dry british humour though.. old buildigs yeah they're great!lol england is great but i think getting through bio wud be better :P BIO FTWLol! theres T.V tax! can u believe that! if u dont pay, then u dont watch :P
*seriously england is great.. Weather.. okay rain sukcs.. but still its nice.. okay maybe the tax is a bit high but stil its nice.. :P
the rain is amazin'! buh, england is ok....if you into the old buildings & all
y7es biology ppll
hmm i got 2 wrong ques in multiple choice
yup
sooo... any ques bout bio?
[/quote
btwm i sent u a message
Thanks...yeh bio i am dreadin bio though dint do muchhey
cud any1 explain how a potometer and a kidney dailysis machine
works
Thanks
it will b a big help if sum1 answers this
Kidney Dailysis machine :
1. Dialysis is needed when both kidneys fail
2. it involves filtering of blood using a dailysis machine
3. the machine is connected up to a vein in the patients arm
4. the blood then passes through tube in the machine
5.urea and waste products: diffuse out and filtered blood returns to the arms
6. sugar and ions do not diffuse out of the blood into dailysis fuild.
Potometer:
It is designed to measure the rate of uptake of water in a cut shoot.
1. Set up the conditions of the experiment. Alterations to lighting (placing the plant in bright light or shadow), wind (directing a fan at the plant), and humidity (placing the plant in a humid chamber) are typical.
2. Let the bubble reach a "zero" point in the tube.
3. Measure the movement of the bubble at regular intervals and record the results.
Hope tht help :)
ok guys since no one's asking questions lemme pull one out of the air... which are the organs that take place in chemical digestion n the organs that take place in mechanical digestion... n whats the difference between chemical n mechanical digestion
ok guys since no one's asking questions lemme pull one out of the air... which are the organs that take place in chemical digestion n the organs that take place in mechanical digestion... n whats the difference between chemical n mechanical digestion
Well, mechanical digestion, is like ingestion- eating, chewing..right?
and chemical, takes place in the gut.. so
organis involves..
-mechanical- tounge (is than an organ?) Mouth? Teeth? hahah
-chemical- oesaphagus,stomach, large intestine, small intestine.. hmm?
lol ur welcome.. bio is my pet subject so getting any facts wrong reli is a turn off.. :P lol.. wishing u all the best for it!! lol thanx for the + rep.. but wat is it all about anyways..
lol ur welcome.. bio is my pet subject so getting any facts wrong reli is a turn off.. :P lol.. wishing u all the best for it!! lol thanx for the + rep.. but wat is it all about anyways..
nothing really :)
I guess if u have minus rep, then ur conisdered as a pest or rude..or just unlucky..haha But if u have a normal rep..ur not experiences but if u have a high one.. your like "Mr. Cool"
lol i really dont know hahah
but what the hell...why not?! Isnt life all about status anyway? :)
try telling alot of people that. ha! and plus..thats why we have karma :) theres a time limit, u can only rep someone after two hours. seeeee? moderation!
Anyway...I need help on Auxins..
Tell me about them..and also..Where do they grow towards. I always thought they grew towards light.. but then in a past paper they said they grew away from light. Now also, in a past paper it also says that too many auxins will kill a plant.
try telling alot of people that. ha! and plus..thats why we have karma :) theres a time limit, u can only rep someone after two hours. seeeee? moderation!
Anyway...I need help on Auxins..
Tell me about them..and also..Where do they grow towards. I always thought they grew towards light.. but then in a past paper they said they grew away from light. Now also, in a past paper it also says that too many auxins will kill a plant.
try telling alot of people that. ha! and plus..thats why we have karma :) theres a time limit, u can only rep someone after two hours. seeeee? moderation!
Anyway...I need help on Auxins..
Tell me about them..and also..Where do they grow towards. I always thought they grew towards light.. but then in a past paper they said they grew away from light. Now also, in a past paper it also says that too many auxins will kill a plant.
LMAO! 1 question and 4 answers so far.. I feel so gud tht billion of sweet people are here to help in each and every step we wanna take towards success... GRRRRRRR8 GOING GUYS!
lol i modified my post.. check it again.. n yes there's a way to bring star wars into everything.. lolyeh my bad!!!i actually waz snding da post whn the warning came and i kept on pressing snd and saw ur post later...sry :)
lol i modified my post.. check it again.. n yes there's a way to bring star wars into everything.. lolyeh my bad!!!i actually waz snding da post whn the warning came and i kept on pressing snd and saw ur post later...sry :)
No angel, that was actually answering the exat question in my past paper.. yeah good stuff!not much.. i modified the geotropism stuff.. i chceked the book again just to be sure..
and wait, what did u modify? i dont get it?
No angel, that was actually answering the exat question in my past paper.. yeah good stuff!not much.. i modified the geotropism stuff.. i chceked the book again just to be sure..
and wait, what did u modify? i dont get it?
Heya!
Kindly , can anyone post a brief advantage/disadvantage list of both asexual & sexual reproduction :D?
Good luck ~
Heya!
Kindly , can anyone post a brief advantage/disadvantage list of both asexual & sexual reproduction :D?
Good luck ~
Does anyone have any predictions for paper 3 bio??
The Lymphatic System:thanks really helped :)
-It is a collection of lymphvessels and glands
It has 3 main roles:
1. The return of tissue fluid to the blood in the form of lymph fluid This prevents fluid build-u in the tissues.
2. The production of lymphocytes.These are made in lymph glands such as the tonsils, adenoids, spleen. The glands become more active during an infection because they are producing and releasing large numbers of lymphocytes.
3.The absorption of fatty acids an glycerol from the small intestine. Each villus contains a lacteal- a blind ending lymph vessel
Hope it helped :)
ahan ... lol cool..me too :D
I live in Saudi :D
LOl.... u from Manarat Boys Riyadh ...?haha yeah!! how'd you know, and you?
:P
The Lymphatic System:thanks really helped :)
-It is a collection of lymphvessels and glands
It has 3 main roles:
1. The return of tissue fluid to the blood in the form of lymph fluid This prevents fluid build-u in the tissues.
2. The production of lymphocytes.These are made in lymph glands such as the tonsils, adenoids, spleen. The glands become more active during an infection because they are producing and releasing large numbers of lymphocytes.
3.The absorption of fatty acids an glycerol from the small intestine. Each villus contains a lacteal- a blind ending lymph vessel
Hope it helped :)
But let me make sure of one thing, is the lymphatic system more to a circulatory one or immune system??
+rep :)
loool...!!haha i know all except O.T13 who is he in manarat?? looool
Ask.. O.T13, Panther and rfi....:P
haha i know, i meant which does it help more or to which is it related to :PThe Lymphatic System:thanks really helped :)
-It is a collection of lymphvessels and glands
It has 3 main roles:
1. The return of tissue fluid to the blood in the form of lymph fluid This prevents fluid build-u in the tissues.
2. The production of lymphocytes.These are made in lymph glands such as the tonsils, adenoids, spleen. The glands become more active during an infection because they are producing and releasing large numbers of lymphocytes.
3.The absorption of fatty acids an glycerol from the small intestine. Each villus contains a lacteal- a blind ending lymph vessel
Hope it helped :)
But let me make sure of one thing, is the lymphatic system more to a circulatory one or immune system??
+rep :)
A lymphatic system is a system in itself....lol :P
haha i know, i meant which does it help more or to which is it related to :PThe Lymphatic System:thanks really helped :)
-It is a collection of lymphvessels and glands
It has 3 main roles:
1. The return of tissue fluid to the blood in the form of lymph fluid This prevents fluid build-u in the tissues.
2. The production of lymphocytes.These are made in lymph glands such as the tonsils, adenoids, spleen. The glands become more active during an infection because they are producing and releasing large numbers of lymphocytes.
3.The absorption of fatty acids an glycerol from the small intestine. Each villus contains a lacteal- a blind ending lymph vessel
Hope it helped :)
But let me make sure of one thing, is the lymphatic system more to a circulatory one or immune system??
+rep :)
A lymphatic system is a system in itself....lol :P
Hey Guys! You know how every year the paper usually has an important page dedicated to an organ from either a plant...or an animal?? Like last year..it was Kidney. Remember??
Anyway, what do u guys think it'll be this year. I have the hugest feeling its going to be the lymphatic system..because its never come up..and it is on the syllabus. Does anyone know when it has come up??
i've seen the lymphatic system in 2002 but tat was the old syllabus.. they will usually show u a microvilli n ask u wat the lymph vessel there is for.. but usually it will be basic functions of the lymph system.. there's not much infor that we need to know at our level..
@camel.. lool u aint gonna fail.. just trust n believe that you've done all u cna. freaking out is gonna make u worst.. cheer up ;) hope tat helps
i've seen the lymphatic system in 2002 but tat was the old syllabus.. they will usually show u a microvilli n ask u wat the lymph vessel there is for.. but usually it will be basic functions of the lymph system.. there's not much infor that we need to know at our level..
@camel.. lool u aint gonna fail.. just trust n believe that you've done all u cna. freaking out is gonna make u worst.. cheer up ;) hope tat helps
The lymph vessel is there to diffuse all the fatty acids and glycerol..correct??
And my book sucks on the lymphatic system. Apart from what people wrote above..what else do I need to know?
i've seen the lymphatic system in 2002 but tat was the old syllabus.. they will usually show u a microvilli n ask u wat the lymph vessel there is for.. but usually it will be basic functions of the lymph system.. there's not much infor that we need to know at our level..
@camel.. lool u aint gonna fail.. just trust n believe that you've done all u cna. freaking out is gonna make u worst.. cheer up ;) hope tat helps
The lymph vessel is there to diffuse all the fatty acids and glycerol..correct??
And my book sucks on the lymphatic system. Apart from what people wrote above..what else do I need to know?
The role of the lymphatic system..
1 to drain the tissue fluid back in to the blood
2 to defend the body against disease by producing lymphocytes which relase antibodies to react with antigens (pathogens)
3 to transports lipids, glycerol and fat soluble vitamins, A,D, E and K from the lacteal (lymph capillary) of the villus back into the circulatory system
4 transport water, hormones, glucose, amino acids, minerals and heat in the interstitial fluid (tissue fluid)
5 transport waste products such as CO2, and nitrogenous compounds from the tissue fluid in the lymphatic system
pretty much its like a whole new blood system but only for the tissue fluid.. you might also need to know where the lymphatic system is and etc.. the make up n all but these are the usual questions they ask like wat is the rold of the lymphatic system.. hope tat helps..
and again if anyone finds an error in my post ur welcomed to correct it :)
gud luck!
i've seen the lymphatic system in 2002 but tat was the old syllabus.. they will usually show u a microvilli n ask u wat the lymph vessel there is for.. but usually it will be basic functions of the lymph system.. there's not much infor that we need to know at our level..
@camel.. lool u aint gonna fail.. just trust n believe that you've done all u cna. freaking out is gonna make u worst.. cheer up ;) hope tat helps
The lymph vessel is there to diffuse all the fatty acids and glycerol..correct??
And my book sucks on the lymphatic system. Apart from what people wrote above..what else do I need to know?
The role of the lymphatic system..
1 to drain the tissue fluid back in to the blood
2 to defend the body against disease by producing lymphocytes which relase antibodies to react with antigens (pathogens)
3 to transports lipids, glycerol and fat soluble vitamins, A,D, E and K from the lacteal (lymph capillary) of the villus back into the circulatory system
4 transport water, hormones, glucose, amino acids, minerals and heat in the interstitial fluid (tissue fluid)
5 transport waste products such as CO2, and nitrogenous compounds from the tissue fluid in the lymphatic system
pretty much its like a whole new blood system but only for the tissue fluid.. you might also need to know where the lymphatic system is and etc.. the make up n all but these are the usual questions they ask like wat is the rold of the lymphatic system.. hope tat helps..
and again if anyone finds an error in my post ur welcomed to correct it :)
gud luck!
exactly where is the lymphatic system locatd ???
Thanks in advance
AWSM Thanksi've seen the lymphatic system in 2002 but tat was the old syllabus.. they will usually show u a microvilli n ask u wat the lymph vessel there is for.. but usually it will be basic functions of the lymph system.. there's not much infor that we need to know at our level..
@camel.. lool u aint gonna fail.. just trust n believe that you've done all u cna. freaking out is gonna make u worst.. cheer up ;) hope tat helps
The lymph vessel is there to diffuse all the fatty acids and glycerol..correct??
And my book sucks on the lymphatic system. Apart from what people wrote above..what else do I need to know?
The role of the lymphatic system..
1 to drain the tissue fluid back in to the blood
2 to defend the body against disease by producing lymphocytes which relase antibodies to react with antigens (pathogens)
3 to transports lipids, glycerol and fat soluble vitamins, A,D, E and K from the lacteal (lymph capillary) of the villus back into the circulatory system
4 transport water, hormones, glucose, amino acids, minerals and heat in the interstitial fluid (tissue fluid)
5 transport waste products such as CO2, and nitrogenous compounds from the tissue fluid in the lymphatic system
pretty much its like a whole new blood system but only for the tissue fluid.. you might also need to know where the lymphatic system is and etc.. the make up n all but these are the usual questions they ask like wat is the rold of the lymphatic system.. hope tat helps..
and again if anyone finds an error in my post ur welcomed to correct it :)
gud luck!
exactly where is the lymphatic system locatd ???
Thanks in advance
lol sorry about that.. its located all around the body.. its a system in itselt.. like there's the blood circulatory system.. the lymphatic system is pretty much similar to the blood circulatory system only its for draining tissue fluid and providing the essential nutrients such as O2 n Glucose to the tissue fluid and draining away all the waste such as C02 n etc.. the lacteals are located in the villus in the small intestines.. but pretty much they are everywhere near the body cells.. just like the blood circulatory system..
hey guys thx a lot fr d help amazing
can somone help me out wth kidney thing
i mean tht absoption then ultra filtration n al tht n wht is d job of phagocytes isnt it engulfing d bacteria n thts it na
hey guys thx a lot fr d help amazing
can somone help me out wth kidney thing
i mean tht absoption then ultra filtration n al tht n wht is d job of phagocytes isnt it engulfing d bacteria n thts it na
thx man...i gt ithey guys thx a lot fr d help amazing
can somone help me out wth kidney thing
i mean tht absoption then ultra filtration n al tht n wht is d job of phagocytes isnt it engulfing d bacteria n thts it na
k first the kidney recievs the blood from aorta via renal artires....then it goes thru absorbtion n filteration where glucose r all absorbd but excess amino ascids some salts n minerls n some water is left behind in the kidney....the filterd blood is taken bak to teh body via renal vein (vena cava)
then the waste products is sent by the ureter to the bladder where urine is stored....l8r its excretd out thru urethra..
now there r two types of white blood cells phagocyte n lymphocyte
lymphocyte produces anibodies which fites against the bacteria whereas phagocyte engulfs teh bacteria
lymphocyets are produced in the lymphatic system
hope this helps
any coorection regardin these notes r welcomed :)
hey guys thx fr d help gt 1 more q fr u allcud u rephrase ur question i didnt reli get that..
suggest y we r aware of the blind spot when both eyes r open
hey guys thx fr d help gt 1 more q fr u alli am not relli sure bout this but lemme giv it a shot
suggest y we r aware of the blind spot when both eyes r open
srry d q is why we r nt aware of d blind spot when bth eyes r openhey guys thx fr d help gt 1 more q fr u allcud u rephrase ur question i didnt reli get that..
suggest y we r aware of the blind spot when both eyes r open
does anyone know why the answer for nov02,ppr3, 2 a)i was motor neurone????yes its a motor neuron..
does anyone know why the answer for nov02,ppr3, 2 a)i was motor neurone????yes its a motor neuron..
does anyone know why the answer for nov02,ppr3, 2 a)i was motor neurone????yes its a motor neuron..
but motor neurone has body cell around it..?
what about sensory neurone?
does anyone know why the answer for nov02,ppr3, 2 a)i was motor neurone????yes its a motor neuron..
but motor neurone has body cell around it..?
what about sensory neurone?
srry d q is why we r nt aware of d blind spot when bth eyes r openhey guys thx fr d help gt 1 more q fr u allcud u rephrase ur question i didnt reli get that..
suggest y we r aware of the blind spot when both eyes r open
n ya 247 sports yr ans does make sum sense bcz i dnt knw nething abt this
srry d q is why we r nt aware of d blind spot when bth eyes r openhey guys thx fr d help gt 1 more q fr u allcud u rephrase ur question i didnt reli get that..
suggest y we r aware of the blind spot when both eyes r open
n ya 247 sports yr ans does make sum sense bcz i dnt knw nething abt this
sporty's right.. we're not aware of the blindspot at all because there are absolutely zero receptors that are sensitive to light on that area.. so if any light shines and falls on our blindspot we wont be able to see it..
tat's why sumtimes when ur at the store and u have a friend or maybe ur mum with u standing just behind u to ur left or right slightly.. and u look back and talk to them for a sec and then look front.. u still think that they're there.. when infact they went off to get some icecream and you end up talking with ur face facing the front to air cause they're not there.. erm.. i dunno how i can make this explaination work.. but i hope u get wat im trying to say..
Wat do they mean when they say.
- describe the importance of gaseous and solute diffusion, and of water as a solvent
appreciate ur help
Wat do they mean when they say
- describe the importance of gaseous and solute diffusion, and of water as a solvent
appreciate ur help
LOL WE GOT DT AODIAN...WE WILL ALL DIE :PWat do they mean when they say.
- describe the importance of gaseous and solute diffusion, and of water as a solvent
appreciate ur help
erm i dont reli understand ur question but i'll give it a shot..
Okay gaseous diffusion is obviously important because... *drum roll* we need to breathe!!!! if we dont breathe we DIE!!!
oh and plants need CO2 as well..
pretty much just mention that gaseous diffusion is important because
a) in plants CO2 is needed for photosynthesis and O2 is given out as a by product so that we humans can breathe.. If there is no CO2 being diffused into the leaf via gas exchange then no photosynthesis occurs, no photosynthesis no food, no food plant die, if die no oxygen given out thus WE DIE..
b) for humans its cause we need oxygen for out body cells to respire and produce energy.. we also need gaseous diffusion (alveoli n body cells) so that the by product of respiration which is CO2 can be diffused out since it is not needed in our body... if no CO2 is Diffused out, the levels will build up and in turn again WE DIE
Solute diffusion im guessing willhaev to do with plants... Its about the uptake of mineral ions in the soil i think.. Correct me if im wrong.. But this will haev to do with the fact that plants will need nitrates and magnesium ions so that the leaves will be able to make protein and manesium is needed to make the green pigment chlorophyll.. if it cant diffuse the nutrients.. then it cant make protein.. n magnesium cant produce chlorophyll which means plant cant make food.. and it DIES
now water as a solvent..
water is needed for various chemical reactions in our body.. We need water for metabolic reactions because the minerals and other stuff dissolve in water. When they dissolve in water this enables enzymes to react with them breaking them down into smaller more soluble molecules so tat our body can take them up and partake in the glorious consumption to make us grow, live breathe etc..
and once again if we no water.. we dehydrate.. no metabolic reactions.. WE DIE!!!!!
hope u got that.. :)
erm guys.. whats myelin for again?it insulate the nuerone to make the transmission of impulses more effective
AHHH YESSS!!! Now it came back to me :D Thx a bunch you lil squirells!no problem papa squirell!!!!!!hehe
AHHH YESSS!!! Now it came back to me :D Thx a bunch you lil squirells!no problem papa squirell!!!!!!hehe
Alright guys.. See ya'z im off.. Im not feeling too well.. puking + plae ghosts are the operative words here.. *BLUEK*'
I'll be back in a few hours though.. wishing u guys all the best.. and Kick A** in BIO alright!
BIO FTW.. only a few more then it's summer!!!
yeah im always usually sick before an exam.. sorry typo.. wat i meant to say was Pale... take care!Alright guys.. See ya'z im off.. Im not feeling too well.. puking + plae ghosts are the operative words here.. *BLUEK*'
I'll be back in a few hours though.. wishing u guys all the best.. and Kick A** in BIO alright!
BIO FTW.. only a few more then it's summer!!!
Ur sickkk?? before the exam??? and whats plae?
yeah im always usually sick before an exam.. sorry typo.. wat i meant to say was Pale... take care!Alright guys.. See ya'z im off.. Im not feeling too well.. puking + plae ghosts are the operative words here.. *BLUEK*'
I'll be back in a few hours though.. wishing u guys all the best.. and Kick A** in BIO alright!
BIO FTW.. only a few more then it's summer!!!
Ur sickkk?? before the exam??? and whats plae?
woo thanks shelbii <3
much luv x
+rep'd before u posted -.- well do again after 2 hours :D
ok some1 plz explain this- describe the path played by the nervous system to enable the person to experience the sensation of taste...and plz give any tips u have in describing nervous pathways...also,plz explain the nitrogen cycle!!!their are specail cells in the senses called receptor cells wen the receptor cells are exposed to a particular stimuli they send impulses through the sensory nuerone which go to the CNS either the brain or spinal cord the brain then sends impulses through the motor nuerone to the effector which is the muscle or gland.wen the impulse reaches the effector it causes the muscle to contract or the gland to produce hormones.
gd luck with ur studying......yup lets rock the CIE board!!!!!!!!
and may God be with us all!....
its almost over peeps....lets do it! :D
gd luck with ur studying......yup lets rock the CIE board!!!!!!!!
and may God be with us all!....
its almost over peeps....lets do it! :D
hehe
well as far i can see or read..this forum is full biology geniuses so there isnt much of a dicussion thing going on mashaallah!!!!!!!!!!gd luck with ur studying......yup lets rock the CIE board!!!!!!!!
and may God be with us all!....
its almost over peeps....lets do it! :D
hehe
u knw im not worried bout tomorrows exam even thgh i gotta review almost all the chapters. i guess ill do good cause thank god bio's my subject ::) ;D but then again all the best to everyone who believe in themselves that they r gonna kick the exam's hyne tomorrows ! all the best folks n well no more discussion ?
when adrenaline is secreted it increases the rate at which the heart beats rytt does it also increase the rate of respiration or breathing?yup
pls reply
when adrenaline is secreted it increases the rate at which the heart beats rytt does it also increase the rate of respiration or breathing?
pls reply
yea even i wrote tht but did u ask ur teacher or sum1 else apart frm a studentwhen adrenaline is secreted it increases the rate at which the heart beats rytt does it also increase the rate of respiration or breathing?
pls reply
yes it does.......its Q24 in paper 1 >>>i remember it cuz it was the only question i wasnt sure of.....but it increases both :D
actually this question was repeated from one of the pp the ms said this annswer so it is correctyea even i wrote tht but did u ask ur teacher or sum1 else apart frm a studentwhen adrenaline is secreted it increases the rate at which the heart beats rytt does it also increase the rate of respiration or breathing?
pls reply
yes it does.......its Q24 in paper 1 >>>i remember it cuz it was the only question i wasnt sure of.....but it increases both :D
actually this question was repeated from one of the pp the ms said this annswer so it is correctyea even i wrote tht but did u ask ur teacher or sum1 else apart frm a studentwhen adrenaline is secreted it increases the rate at which the heart beats rytt does it also increase the rate of respiration or breathing?
pls reply
yes it does.......its Q24 in paper 1 >>>i remember it cuz it was the only question i wasnt sure of.....but it increases both :D
if over 30 student did it the same as me..........i guess its right, and i know its right cuz i know everything about adrenaline......i wasnt sure back then cuz i bored and wasnt thinking straight.........but its CORRECT!!
wat does MAX.3 mean in da mark scheme??????????it means dat the answer requires maximum 3 points from the above answer
how do you draw it
but that pic is way too complicatedhow do you draw it
http://www.neodymsystems.com/ring/r_img/virus_aids.jpg
plz someone answer this question
"how can salt help in preventing decay?!!!" ???
Please do this questioni have don't it but dunno how to attach it
because i am little confused, u can do it in paint itself and post the picture back.
Is this right?yup that is right
plz someone answer this questionsalt will absorb water from bacteria and without that the bacteria dies
"how can salt help in preventing decay?!!!" ???
Thanks alooooootplz someone answer this questionsalt will absorb water from bacteria and without that the bacteria dies
"how can salt help in preventing decay?!!!" ???
guys can an1 of u explain me
m/j 2003
question 2b)ii)Thanks
Thanks alooooootplz someone answer this questionsalt will absorb water from bacteria and without that the bacteria dies
"how can salt help in preventing decay?!!!" ???
Can some one answer these questions please?
(a) Explain how water passes from the soil into the vacuole of the root hair cell.
(b) A small insect flies towards the eye, causing the person to blink. Describe a possible reflex arc for this reflex action.
describe or draw the arc?
awsm dude Thanksguys can an1 of u explain me
m/j 2003
question 2b)ii)Thanks
town A is dark coloured one.. count the total percentage of the dark coloured squares.. then look at the X axis to find the number of children with less than 5 teeth decayed.. so its 4 until 1.. then calculate the percentag
total numnber of tooth decayed less than 5 divided by total number of tooth decayed multiplied by 100%
awsm dude Thanksguys can an1 of u explain me
m/j 2003
question 2b)ii)Thanks
town A is dark coloured one.. count the total percentage of the dark coloured squares.. then look at the X axis to find the number of children with less than 5 teeth decayed.. so its 4 until 1.. then calculate the percentag
total numnber of tooth decayed less than 5 divided by total number of tooth decayed multiplied by 100%
cya tmrw gud luck :)
Hi how is biology with all of you
i have alot of questions considering i hate this subject so here they are please answer quickly
1. what the hell is conditioned reflexes?
2. what is the function of the midbrain?
3. can u tell me examples of continous and discontinous variations other than height and blood group?
4. what is the water cycle?i don't have it
5. what are the effects of deforestation?
6. what is biological control?
7. what is the function of companion cells?
8. what is negative and positive feedbacks, with examples please?and what is the difference between them?
i know they are alot but i realllllllllllllllllllllllllllllllly hate this subject and i don't get anything and the exam is tomorow
so many thanks for any contribution
guyz do u think in m/j 2009 dats tmrw will they ask us to choose two questions and answer em because i criously dunt like em =sthat shte old syllabus they took that off since 2004 u dont need to worry about tat.. dont even bother answering that.. sum of it is AS level stuff
Hi how is biology with all of you
i have alot of questions considering i hate this subject so here they are please answer quickly
1. what the hell is conditioned reflexes?
2. what is the function of the midbrain?
3. can u tell me examples of continous and discontinous variations other than height and blood group?
4. what is the water cycle?i don't have it
5. what are the effects of deforestation?
6. what is biological control?
7. what is the function of companion cells?
8. what is negative and positive feedbacks, with examples please?and what is the difference between them?
i know they are alot but i realllllllllllllllllllllllllllllllly hate this subject and i don't get anything and the exam is tomorow
so many thanks for any contribution
If theres more than enough food for everyone in the world, why do so many die by starvation?
^ question in my text book and isnt answered..pfft someone answer :P
Hi how is biology with all of you
i have alot of questions considering i hate this subject so here they are please answer quickly
1. what the hell is conditioned reflexes?
2. what is the function of the midbrain?
3. can u tell me examples of continous and discontinous variations other than height and blood group?
4. what is the water cycle?i don't have it
5. what are the effects of deforestation?
6. what is biological control?
7. what is the function of companion cells?
8. what is negative and positive feedbacks, with examples please?and what is the difference between them?
i know they are alot but i realllllllllllllllllllllllllllllllly hate this subject and i don't get anything and the exam is tomorow
so many thanks for any contribution
Hey guys, I have a question:d u koe wher the glomerus is ???
For the O/N/07 Paper 3 Question 3.b.i), it asks where filtration occurs-whereabouts on the picture do I label? Thanks :)
it says this in the marking scheme:
"F on cortex / white area between fibrous capsule and stippled medulla ; allow on glomerulus but not anywhere else on tubule"
all these terms..ahh!! lol so the cortext...where's that?
Nitrogen Cycle Please? ;D
Nitrogen Cycle Please? ;D
visit this site http://www.classzone.com/books/ml_science_share/vis_sim/em05_pg20_nitrogen/em05_pg20_nitrogen.html
now.. i have a few doubts ....theyre directly quoted from the syllabus...
-discuss the use of hormones in food production
-compare the role of transpiration and
translocation in the transport of materials from
sources to sinks, within plants at different
seasons
i dont get the first point and the underlined part....
would appreciate some help!
;D
Thanks sports and Aodian-+rep!! :) :)Thanks :)
whats the function of the pancreatic juice?
whats the function of the pancreatic juice?the pancreatic juice contains
hey could some1 giv a bit of detail on Phloem plz ???
cant find enough of it ma textbook
plz reply ASAP
Thanks ! :)
Thanks a lot ! :)
+ rep 4 u ;)
By the way... what are the decay products when bacteria act on dead organisms?
do they release Nitrogen gas, or ammonium compounds?
Can anyone help me with these questions..
Q:Describe how the structure of Xylem tissue is adapted to its functions And the Mechanism of water movement through Xylem.
Q:How blood provides suitable conditions for the reproduction of viruses.
thanks mate... but is that it?
can u just tell me the other products...?
thanks alot..
thanks mate... but is that it?
can u just tell me the other products...?
thanks alot..
there r a lot of complex products but u need to know nitrogen and carbon dioxide
Can anyone help me with these questions..
Q:Describe how the structure of Xylem tissue is adapted to its functions And the Mechanism of water movement through Xylem.
Q:How blood provides suitable conditions for the reproduction of viruses.
The tracheids, fibres, and vessels present in the xylem, become lignified during development, losing their living contents. This makes the tissue impermeable (to water) so none is lost as water is transported via the xylem. The tracheids' bordered pits allow for the rapid movement of water from cell to cell.
As is with tracheids, the lignification of vessels can occur as rings, spirals, scalariform or reticulate. In the first formed xylem, rings and spirals occur more frequently. This allows for a limited amount of stretching which may occur in young structures.
Both tracheids and vessels provide a pathway for the transportation of water, whilst also contributing to support.
Hope tht helps!
Can anyone help me with these questions..
Q:Describe how the structure of Xylem tissue is adapted to its functions And the Mechanism of water movement through Xylem.
Q:How blood provides suitable conditions for the reproduction of viruses.
The tracheids, fibres, and vessels present in the xylem, become lignified during development, losing their living contents. This makes the tissue impermeable (to water) so none is lost as water is transported via the xylem. The tracheids' bordered pits allow for the rapid movement of water from cell to cell.
As is with tracheids, the lignification of vessels can occur as rings, spirals, scalariform or reticulate. In the first formed xylem, rings and spirals occur more frequently. This allows for a limited amount of stretching which may occur in young structures.
Both tracheids and vessels provide a pathway for the transportation of water, whilst also contributing to support.
Hope tht helps!
Can anyone help me with these questions..
Q:Describe how the structure of Xylem tissue is adapted to its functions And the Mechanism of water movement through Xylem.
Q:How blood provides suitable conditions for the reproduction of viruses.
The tracheids, fibres, and vessels present in the xylem, become lignified during development, losing their living contents. This makes the tissue impermeable (to water) so none is lost as water is transported via the xylem. The tracheids' bordered pits allow for the rapid movement of water from cell to cell.
As is with tracheids, the lignification of vessels can occur as rings, spirals, scalariform or reticulate. In the first formed xylem, rings and spirals occur more frequently. This allows for a limited amount of stretching which may occur in young structures.
Both tracheids and vessels provide a pathway for the transportation of water, whilst also contributing to support.
Hope tht helps!
Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts.
You dont need to know tht in depth m8... i guess i answered in too much detail... srry guys.. dnt be scared :(
Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts.
You dont need to know tht in depth m8... i guess i answered in too much detail... srry guys.. dnt be scared :(
oh no its fine! just wondering hehe
but now i know what tracheids are :)
yeah it helps alot thnk u very muchHi how is biology with all of you
i have alot of questions considering i hate this subject so here they are please answer quickly
1. what the hell is conditioned reflexes?
2. what is the function of the midbrain?
3. can u tell me examples of continous and discontinous variations other than height and blood group?
4. what is the water cycle?i don't have it
5. what are the effects of deforestation?
6. what is biological control?
7. what is the function of companion cells?
8. what is negative and positive feedbacks, with examples please?and what is the difference between them?
i know they are alot but i realllllllllllllllllllllllllllllllly hate this subject and i don't get anything and the exam is tomorow
so many thanks for any contribution
woah woah... tats a long list u got there.. n dont hate the subject.. love it and it'l;l make sense... like how at first ppl dont make sense but when u fall in love with them it mkes sense.. lol okay enouhg beating around the bush here goes..
1. Conditioned reflexes are reflexes that you learn.. For example when you learn how to drive a car(i failed at this) your brain need to coordinate your hand on the stickshift, ur other hand on the steering wheel, one foot on the clutch and the other on the accellerator.. but after a while.. u get used to all this and ur brain and body is able to coordinate due to muscle memory.. It's like a baby learning how to walk.. once u get the hang of it all you dont even need to think twice about how where to keep ur hand on the steering wheel, when u need to put in the clutch (ugh manual testing -.-) and etc...
2. I've never studied or heard of the midbrain up till this point but i've done some digging up.. but its just basic information so here goes.. The midbrain is the smallest region of the brain that acts as a sort of relay station for auditory and visual information. It controls what we hear.. our pupilary mechanism and etc.. google it and find out more so that you can understand..
3. http://www.biologymad.com/resources/RevisionM5Ch2.pdf check this place out.. this should answer ur questions..
okay.. this is as far as i can go for now.. hop ehtis helps
thank u alot u really helpedHi how is biology with all of you
i have alot of questions considering i hate this subject so here they are please answer quickly
1. what the hell is conditioned reflexes?
2. what is the function of the midbrain?
3. can u tell me examples of continous and discontinous variations other than height and blood group?
4. what is the water cycle?i don't have it
5. what are the effects of deforestation?
6. what is biological control?
7. what is the function of companion cells?
8. what is negative and positive feedbacks, with examples please?and what is the difference between them?
i know they are alot but i realllllllllllllllllllllllllllllllly hate this subject and i don't get anything and the exam is tomorow
so many thanks for any contribution
k a companion cell is located in the pholem vessel....since the pholem cell only has cytoplasm the companion cell provides the phloem cell with with all its ncessaries :)
effects of deforestation....soil erosion because nw the soil is not anchord.....the percentage of CO2 in creses as no plnt to take CO2 n convert it into O2...this can lead to global wrmin whi ch will lead to the rise in sea level due to the meltin of the polar caps
continuos varition is body mass n discontionus is the ability to roll ur tongue
n by the conditiond reflexes do u mean the reflex arc???
aneways reflex arc wrks like this....first when u suppose touch a hot plate the receptor will pick it up n the messege will b ppsd on by the sensory nurone ....the dendrites of the sensory neurone picks it up passe it on to the cell body n then the axon picks it up to pass it on to teh relay neurone then agn the dendrites picks it up passes to the cell body of the relay neurone n the the axon takes it away form teh cell body n passes to the motor neurone where agn the dendrites pick it up passes on to the cell body n then axon take it to the effectos eg muscel which then contercts to mov ethe hand away....(any correction is welcomed)hope this helps..ahh i am in lub wif this ;)
it says in the syllabus and that's a quote " discuss the use of hormones in food production"
wt is that and wt is the use of hormones in food production?
Thanks alot and whoever answers first a good answer will get a +rep
ok? Thanks
also what is meant by dormancy?
good luck to all
it says in the syllabus and that's a quote " discuss the use of hormones in food production"
wt is that and wt is the use of hormones in food production?
Thanks alot and whoever answers first a good answer will get a +rep
ok? Thanks
also what is meant by dormancy?
good luck to all
farmers add hormones to animals to make em produce wot they want
eg adding bovine somatotropin to cows to get em to make more milk
gettit?
and can someone explain amnion and amniotic fluid
plzzz
thts all we need to know right???it says in the syllabus and that's a quote " discuss the use of hormones in food production"
wt is that and wt is the use of hormones in food production?
Thanks alot and whoever answers first a good answer will get a +rep
ok? Thanks
also what is meant by dormancy?
good luck to all
farmers add hormones to animals to make em produce wot they want
eg adding bovine somatotropin to cows to get em to make more milk
gettit?
and can someone explain amnion and amniotic fluid
plzzz
Amnion is a Sac which secretes amniotic fluid
Amniotic fluid protects the Fetus n is like a shock absorber..
Yeah lol i guess...so far thats the detail i have seen in PPthts all we need to know right???it says in the syllabus and that's a quote " discuss the use of hormones in food production"
wt is that and wt is the use of hormones in food production?
Thanks alot and whoever answers first a good answer will get a +rep
ok? Thanks
also what is meant by dormancy?
good luck to all
farmers add hormones to animals to make em produce wot they want
eg adding bovine somatotropin to cows to get em to make more milk
gettit?
and can someone explain amnion and amniotic fluid
plzzz
Amnion is a Sac which secretes amniotic fluid
Amniotic fluid protects the Fetus n is like a shock absorber..
+rep, ur first hehe
Whats the "function" of the lymphatic system, i know what it is, but i dont know its specefic function
Whats the "function" of the lymphatic system, i know what it is, but i dont know its specefic functionFunctions of lymphatic system include:
heyFungi are multiceelular organizms which have networks of hyphae called mycellium;they reproduce by production of spores and carries out saprophitic nutrition.
cud u plz summarise the main point ov de diffrnc btween
fungi bacteria n viruses??
Thanks!!
can someone plz explainit means that energy doesn't flow in the environment in a circle form like the carbon or nitrogen cycle instead it flows as a chain form from upper to lower and lost as heat at end
non-cyclical nature of energy flow
yeah monnie but ive multiple choice physics/chemi afterwards.. lolyeah me too but they r easy um not gonna study either
can u give me examples plzcan someone plz explainit means that energy doesn't flow in the environment in a circle form like the carbon or nitrogen cycle instead it flows as a chain form from upper to lower and lost as heat at end
non-cyclical nature of energy flow
Can anyone explain to me the fresh and dry mass of the plant?
Can anyone explain to me the fresh and dry mass of the plant?Dry mass-without water
Can anyone explain to me the fresh and dry mass of the plant?fresh mass is the weight of the organizm including all the water in its body
um sorry i don't know any examples i don't even like bio i just memorize and i don't remember the teacher gave us examples but i don't think it is that importantcan u give me examples plzcan someone plz explainit means that energy doesn't flow in the environment in a circle form like the carbon or nitrogen cycle instead it flows as a chain form from upper to lower and lost as heat at end
non-cyclical nature of energy flow
+rep
really appreciate it
Define the term Enzyme?if it was a 2 mark question you would get 2 for biological and catalyst. protein just makes it even better haha :D but if it was three marks explain what biological and catalyst mean, and then definitely include the protein part :)
* a protein which acts as a biological catalyst
would that definition give me a full mark for the question? ???
Define the term Enzyme?a protein biological catalyst which speeds up the reaction without itself getting used it is specific to a substrate due to the active site
* a protein which acts as a biological catalyst
would that definition give me a full mark for the question? ???
Thank you all I knew that! But needed furthur explanation! Anywy thank you
Thanks monnieThanks for the rep
+rep!!
good luck to you.. enjoy ur sleep :D
going to bed myself soon, gona study reproduction tomorrow morning
ahh.. got me worried now, gona finish it today then lol
ahh.. got me worried now, gona finish it today then lolloooool but trust me better for u
hey,wat r the fat solube vitamins???i don't know exactly wt they r but i know an example which might help
hey,wat r the fat solube vitamins???i don't know exactly wt they r but i know an example which might help
vitamin D is fat soluble vitamin
hope it helps
no actually the other one is vitamin Ahey,wat r the fat solube vitamins???i don't know exactly wt they r but i know an example which might help
vitamin D is fat soluble vitamin
hope it helps
thanx:D
but i know there r 2,wats the other one....maybe B i guess
no actually the other one is vitamin Ahey,wat r the fat solube vitamins???i don't know exactly wt they r but i know an example which might help
vitamin D is fat soluble vitamin
hope it helps
thanx:D
but i know there r 2,wats the other one....maybe B i guess
Thanks for the repno actually the other one is vitamin Ahey,wat r the fat solube vitamins???i don't know exactly wt they r but i know an example which might help
vitamin D is fat soluble vitamin
hope it helps
thanx:D
but i know there r 2,wats the other one....maybe B i guess
k thanx +rep
how is agriculture used to improve technology?is that even correct shudn't lik be howz technology used to improve agriculture ???
plz answer
will be grateful
wish i had coffeee..
wish there was this hi tech thingy that lets us copy and paste knowledge into our heads -.-
wish there was this hi tech thingy that lets us copy and paste knowledge into our heads -.-instead of wishing how about studying and why dnt u go to yr kitchen and make some coffee but let me tell u if u r planning to sleep sson dnt hv some it will keep u awake for many hours and you wnt be abl to sleep
im halfway thru reproduction already ^^me too but um done with the syllabus um just looking at pastpapers and stuff
studying and posting every now and then lol
i'm a guy ^^sometimes but i usually hv a problem in understanding wt exactly the question wants so i go over them after i finish studying
ah well, ive studied past papers alot probably memorised every question from 2004-2008
so just going thru syllabus, past papers are pretty Straigh-forward (most of them) dont you think?
i got a que
um on a hot day, is there more urea formed?
i got a queno on a clod day more urea is formed i dont know how or why but i know that much that on a cold day it is more probably something to do with shivering
um on a hot day, is there more urea formed?
Just wondering if you people think may come up tomorow...um second for sure bec my phy p3 was second
Are you doing the first or second varient paper?
:)Good luck for tomorow! :)
Yea lol..but actually i guess u mixed up the two features of Homeostasis...i got a queno on a clod day more urea is formed i dont know how or why but i know that much that on a cold day it is more probably something to do with shivering
um on a hot day, is there more urea formed?
hope that helps
Just wondering if you people think may come up tomorow...M doing both lol...my paper is second though
Are you doing the first or second varient paper?
:)Good luck for tomorow! :)
monnie By the way are u a he or a she :Dum a she
( dont ignore classification, 99% its going to come as there wasnt any in p1 or p6 )
i got a queno..
um on a hot day, is there more urea formed?
monnie By the way are u a he or a she :Dum a she
( dont ignore classification, 99% its going to come as there wasnt any in p1 or p6 )
also possability of eye coming is high as it didnt come and plants bec there was none in p6
anyways good luck
can u then explain the difference between bothYea lol..but actually i guess u mixed up the two features of Homeostasis...i got a queno on a clod day more urea is formed i dont know how or why but i know that much that on a cold day it is more probably something to do with shivering
um on a hot day, is there more urea formed?
hope that helps
Shivering is to do with Temperature regulation and quantity of urea is with water regulation..
If theres a far away moving object, and u suddenly want to focus on it to see it clearly, what happens to ur eye to make u see the moving object clearly?if it is far then the lens becomes big to get most light rays
If theres a far away moving object, and u suddenly want to focus on it to see it clearly, what happens to ur eye to make u see the moving object clearly?
thanks alot both of u, i owe u +repps after 2 hrs :DisA we will all do well
--
no stress to be honest, ive done my side, studied to the maximum of my effort, w ensha2allah i'll do well ^^
can u then explain the difference between bothYea lol..but actually i guess u mixed up the two features of Homeostasis...i got a queno on a clod day more urea is formed i dont know how or why but i know that much that on a cold day it is more probably something to do with shivering
um on a hot day, is there more urea formed?
hope that helps
Shivering is to do with Temperature regulation and quantity of urea is with water regulation..
Thanks
hey... i need help with biology!the most imp topics that u hv to finish first are
i havent studied anythingg cos i was really busy so im gonna start studying now.
can anyone think of the most important topics about plants that are important for me to study?
If theres a far away moving object, and u suddenly want to focus on it to see it clearly, what happens to ur eye to make u see the moving object clearly?The cilliary muscle relax, giving them a larger diameter. This pulls on the suspensory legaments which in turn pull on the lense. This makes the lense thinner. As the cilliary muscles are relaxed there is no strain on the eye.
hey... i need help with biology!
i havent studied anythingg cos i was really busy so im gonna start studying now.
can anyone think of the most important topics about plants that are important for me to study?
i dont know the difference between the internal and external intercoastal musclesUmm..i dnt knw the exact difference..u can say they r like the antagonistic ones..Wen one contracts the other relaxes..
where are they situated and wt do they do and how do they work?
all that is mentioned in my textbook is :Thanks alot
EXTERNAL intercostal muscles contract to lift the ribcage up
EXTERNAL intercostal muscles relax so the ribcage goes back, if ur breathing hard the INTERNAL intercostal muscles contract to move the ribcage further back
i dont know the difference between the internal and external intercoastal musclesboth intercostal muscles are attached to the ribs, they are antagonistic. when the external intercostal muscles contract, they move the rib cage upwards & outwards, & the diaphragm muscles contract increasing the volume of the thorax.
where are they situated and wt do they do and how do they work?
I want help with insects, arthropods, crustacians... and all those in our syllabuswhy dnt u google them or look them up in th wikipedia it will be much easier than some1 writing them
I had the notes but i just lost them yesterday
Pls can anyone post their characteristics and an easy way to learn them
or scan and give a copy of their notes
can any1 do me this favour.... i will b v.gratefull to u
I want help with insects, arthropods, crustacians... and all those in our syllabuswhy dnt u google them or look them up in th wikipedia it will be much easier than some1 writing them
I had the notes but i just lost them yesterday
Pls can anyone post their characteristics and an easy way to learn them
or scan and give a copy of their notes
can any1 do me this favour.... i will b v.gratefull to u
Please read your "my messages."I want help with insects, arthropods, crustacians... and all those in our syllabuswhy dnt u google them or look them up in th wikipedia it will be much easier than some1 writing them
I had the notes but i just lost them yesterday
Pls can anyone post their characteristics and an easy way to learn them
or scan and give a copy of their notes
can any1 do me this favour.... i will b v.gratefull to u
I just did that
stuff out of course pops up
-wt are the functions of water?
- wt is the importance of osmosis?
-why does active transport occurs even though we hv diffusion?
pls answer quick i think um gona pass out
dnt need to remember more these r enuf...i guess and wn i said i'll pass out it's a metaphor bec my back is killing me as i hv been studying for more than 9 hours now-wt are the functions of water?
- wt is the importance of osmosis?
-why does active transport occurs even though we hv diffusion?
pls answer quick i think um gona pass out
hehe hold on there ^^
--
-What are the functions of water.
* our cells are mostly water , used to transport stuff around the body.. keeps cells turgid in plants.. cant think of more
-important of osmosis.
*cells draw water in by osmoses to keep there cells turgid and healthy
-why does active transport occurs even though we hv diffusion?
* active transport is against the concentration gradient from low concentation to high concentration.
example: when a plant takes in nitrate ions from the soil .. they take them from the soil althu the concentration in the soil is lower than the plant. Active transport needs energy so more respiration needed
i duno anythig abt biotechnology lolThanks r u done studying or nt yet?
umm antognostic means working agains each other, like when one muscle contracts the other relaxes
It's glucagon, if I'm not wrong.
Insulin converts glycogen to glucose right!?!? :-\no its da other way round
It's glucagon, if I'm not wrong.
Insulin converts glucose to glycogen
and adrenalin and glucogen converts glycogen in to glucose