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Author Topic: CHEM AND BIO HELP AND TIPS HERE  (Read 350874 times)

Offline SNA

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3255 on: June 07, 2010, 10:06:08 pm »
Quote from: 8T on June 07, 2010, 09:50:34 pm
Same here but i have to so imana go .
Sleep well u will need it :)
Byee !
haha..thanks and gud nite!
gudluck for 2morrow!+ cant wait to discuss it! ;D
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Offline the_grim_reaper

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3256 on: June 07, 2010, 10:11:40 pm »
Quote from: Ivo on June 07, 2010, 10:03:28 pm
Please can someone answer my doubts.

First is A, second is B and third is A in my view. Please correct me if I'm wrong....
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Offline Ivo

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3257 on: June 07, 2010, 10:15:08 pm »
Quote from: the_grim_reaper on June 07, 2010, 10:11:40 pm
First is A, second is B and third is A in my view. Please correct me if I'm wrong....

Yep A is right for the first one, but why isn't it carbon dioxide, I'm sure CO2 is produced in respiration and CO2 isn't produced in urine?

Dunno about the second one, can someone help please?

And for last one, yes A, but what's the development shown?
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Offline The Golden Girl =D

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3258 on: June 07, 2010, 10:17:55 pm »
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Offline SNA

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3259 on: June 07, 2010, 10:20:39 pm »

2. is B. ( it cant be A as if carry two recessive allele, the grandparents will be black in colour.cant be c and d either bcoz if only one is heterozygous that means the other is homozygous - (either both recessive or dominant allele) if both allele are dominant,then all the offsprings will be fine. if both allele are recessive, colour will be black. (its kinda of confusing. hope u understand)
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Offline Ivo

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3260 on: June 07, 2010, 10:22:15 pm »
Quote from: the golden girl on June 07, 2010, 10:17:55 pm
http://www.freeexampapers.us/IGCSE/Biology/CIE/2009%20Jun/0610_s09_qp_1.pdf

y is no. 22  C ?...can someone plz xplain

Renal artery obviously transports glucose.  When filtered, it is reabsorbed back into the renal vein, so there is no presence of glucose in the ureter.
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Offline The Golden Girl =D

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3261 on: June 07, 2010, 10:23:00 pm »
Quote from: Ivo on June 07, 2010, 10:22:15 pm
Renal artery obviously transports glucose.  When filtered, it is reabsorbed back into the renal vein, so there is no presence of glucose in the ureter.

aha  ::)    thx mate  :D
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Offline MasterMath

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3262 on: June 07, 2010, 10:23:34 pm »
Thank god i dont take bio :D , i can see how your suffering.. but i regret it also.. chem today was .. BIO MUCH FIRST 2 PAGES =_="
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Offline the_grim_reaper

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3263 on: June 07, 2010, 10:23:42 pm »
Quote from: Ivo on June 07, 2010, 10:15:08 pm
Yep A is right for the first one, but why isn't it carbon dioxide, I'm sure CO2 is produced in respiration and CO2 isn't produced in urine?

Dunno about the second one, can someone help please?

And for last one, yes A, but what's the development shown?

Ivo only urine isn't excretion ;D. Excretion includes removal of waste products of metabolism and Carbon Dioxide is a waste material. Development is increase in complexity by cell enlargement, cell division and morph genesis. I think it's development cause you've got new leaves in it which must have developed from the shoot. Anyway, VIN please (oh wait you're intoxication now ;D) please help. I ain't too confident of that....
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Offline The Golden Girl =D

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3264 on: June 07, 2010, 10:26:55 pm »
Quote from: MasterMath on June 07, 2010, 10:23:34 pm
Thank god i dont take bio :D , i can see how your suffering.. but i regret it also.. chem today was .. BIO MUCH FIRST 2 PAGES =_="

ur actin like my calssmates  , they were like *umm so where r we goin out today , to the cinema , ohh no i'll sleep for today * ..that's what they said today and i got soo mad at them ...lol ...(jealous :P :P )

lol...then go to sleep or do  smthn fun!!  :D :D
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Offline MasterMath

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3265 on: June 07, 2010, 10:29:09 pm »
Quote from: the golden girl on June 07, 2010, 10:26:55 pm
ur actin like my calssmates  , they were like *umm so where r we goin out today , to the cinema , ohh no i'll sleep for today * ..that's what they said today and i got soo mad at them ...lol ...(jealous :P :P )

lol...then go to sleep or do  smthn fun!!  :D :D
I still have my C2 AS math after 2morow :P , but math is really easy i didnt even start solving pp , just guna do like 1 or 2 :D
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Offline Ivo

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3266 on: June 07, 2010, 10:29:18 pm »
Quote from: SNA on June 07, 2010, 10:20:39 pm

2. is B. ( it cant be A as if carry two recessive allele, the grandparents will be black in colour.cant be c and d either bcoz if only one is heterozygous that means the other is homozygous - (either both recessive or dominant allele) if both allele are dominant,then all the offsprings will be fine. if both allele are recessive, colour will be black. (its kinda of confusing. hope u understand)

I'm kinda confused.  But surely if it was B (it is), then the grandparents will have genotype of Nn.  If you cross them, it will be Nn * Nn, which will give offspring: NN, Nn, Nn, nn.  But that's 3:1, but it shows 1:1 in the diagram.

Majorly confused.
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Offline the_grim_reaper

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3267 on: June 07, 2010, 10:29:54 pm »
Quote from: the golden girl on June 07, 2010, 10:26:55 pm
ur actin like my calssmates  , they were like *umm so where r we goin out today , to the cinema , ohh no i'll sleep for today * ..that's what they said today and i got soo mad at them ...lol ...(jealous :P :P )

lol...then go to sleep or do  smthn fun!!  :D :D

hahahaah we did the same thing when our classmates were having their ICT exams. Now, they did with us today :(. Seriously, I'm suing CIE!!! I've lost 5 kgs during the exams, I couldn't watch the champions' league final cause of them exams, i missed england vs japan and i also missed england's friendly today!!! All cause of CIE :D :D...
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Offline The Golden Girl =D

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3268 on: June 07, 2010, 10:31:41 pm »
Quote from: the_grim_reaper on June 07, 2010, 10:29:54 pm
hahahaah we did the same thing when our classmates were having their ICT exams. Now, they did with us today :(. Seriously, I'm suing CIE!!! I've lost 5 kgs during the exams, I couldn't watch the champions' league final cause of them exams, i missed england vs japan and i also missed england's friendly today!!! All cause of CIE :D :D...


u kno we can make a team so that we take our revenge without troublin anyone u kno
i've already teamed up with some

*shhh don't tell the CIE * :P .lol  ::)
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Verily, in the remembrance of Allah do hearts find rest(13:28)

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Offline The Golden Girl =D

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3269 on: June 07, 2010, 10:32:25 pm »
Quote from: MasterMath on June 07, 2010, 10:29:09 pm
I still have my C2 AS math after 2morow :P , but math is really easy i didnt even start solving pp , just guna do like 1 or 2 :D

well then go study ,what r u doin here :P :P :P
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