Author Topic: Biology Paper 1 and 3 help HERE ONLY!!!  (Read 48379 times)

Offline Kim

  • here comes trouble!=D
  • SF V.I.P
  • ********
  • Posts: 9835
  • Reputation: 36270
  • Gender: Female
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #390 on: June 07, 2009, 12:43:13 pm »
After all is said and done, more is said than done.

By the time a man realizes that maybe his father was right, he usually has a son who thinks he’s wrong.

The early bird may get the worm, but the second mouse gets the cheese.

Offline Feva

  • SF Immigrant
  • **
  • Posts: 54
  • Reputation: 5
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #391 on: June 07, 2009, 12:47:46 pm »
i cant be bothered to study seriously.. i know most of the stuff.. just realllyyy annoying to go over the book again..

past papers are very simple.. but out exam might be hard, so i have to study -.-

Offline Ibiza279

  • SF Immigrant
  • **
  • Posts: 96
  • Reputation: 66
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #392 on: June 07, 2009, 12:56:02 pm »
wowowo hold it.

they say that the toad's increasing population is out of control that means the curve never forms n "S" it keeps goin up thats wat i understud by the " out of control " part n poor females :( :(
live life like you'll never die but don't die like you never lived but then again its a saying n i don't believe in saying much so jus forget it . . .

Offline Ibiza279

  • SF Immigrant
  • **
  • Posts: 96
  • Reputation: 66
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #393 on: June 07, 2009, 01:01:49 pm »
for crying out loud, will someone reply already !
live life like you'll never die but don't die like you never lived but then again its a saying n i don't believe in saying much so jus forget it . . .

Offline IGSTUDENT

  • SF Citizen
  • ***
  • Posts: 192
  • Reputation: 811
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #394 on: June 07, 2009, 01:02:20 pm »
plz someone answer this question
"how can salt help in preventing decay?!!!" ???
salt will absorb water from bacteria and without that the bacteria dies

Offline Ibiza279

  • SF Immigrant
  • **
  • Posts: 96
  • Reputation: 66
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #395 on: June 07, 2009, 01:04:12 pm »
see wat i mean this is wat an exponential curve is (down)
live life like you'll never die but don't die like you never lived but then again its a saying n i don't believe in saying much so jus forget it . . .

Offline Ibiza279

  • SF Immigrant
  • **
  • Posts: 96
  • Reputation: 66
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #396 on: June 07, 2009, 01:10:29 pm »
where is everybody ?
live life like you'll never die but don't die like you never lived but then again its a saying n i don't believe in saying much so jus forget it . . .

Offline Triple_A

  • SF Immigrant
  • **
  • Posts: 69
  • Reputation: -1
  • Gender: Male
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #397 on: June 07, 2009, 01:17:21 pm »
plz someone answer this question
"how can salt help in preventing decay?!!!" ???
salt will absorb water from bacteria and without that the bacteria dies
Thanks aloooooot
IGCSE insists on clear plastic pencil case
So whats next?!!...............Clear Outfits O.o'
loOoOol

Offline examsaresoon

  • Newbie
  • *
  • Posts: 47
  • Reputation: 11
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #398 on: June 07, 2009, 01:19:23 pm »
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.




Offline 247sports

  • SF Immigrant
  • **
  • Posts: 61
  • Reputation: 49
  • "A man becomes what he thinks"
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #399 on: June 07, 2009, 01:32:30 pm »
guys can an1 of u explain me
m/j 2003
question 2b)ii)
Thanks

Offline Triple_A

  • SF Immigrant
  • **
  • Posts: 69
  • Reputation: -1
  • Gender: Male
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #400 on: June 07, 2009, 01:35:45 pm »
a) low water potential in vacuole, higher in soil so water moves from soil to vacuole by osmosis through a semi-permeable membrane
b) im not sure
IGCSE insists on clear plastic pencil case
So whats next?!!...............Clear Outfits O.o'
loOoOol

Offline Aodian

  • SF Immigrant
  • **
  • Posts: 85
  • Reputation: 28
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #401 on: June 07, 2009, 01:39:14 pm »
guys 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%
Music is enough to last a lifetime, but a lifetime isnt enough for music..

ami tomake bhalobashi.. <3

Offline IGSTUDENT

  • SF Citizen
  • ***
  • Posts: 192
  • Reputation: 811
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #402 on: June 07, 2009, 01:39:47 pm »
plz someone answer this question
"how can salt help in preventing decay?!!!" ???
salt will absorb water from bacteria and without that the bacteria dies
Thanks aloooooot

Do u need to draw the arc?

Offline IGSTUDENT

  • SF Citizen
  • ***
  • Posts: 192
  • Reputation: 811
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #403 on: June 07, 2009, 01:40:43 pm »
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?

Offline 247sports

  • SF Immigrant
  • **
  • Posts: 61
  • Reputation: 49
  • "A man becomes what he thinks"
Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #404 on: June 07, 2009, 01:44:50 pm »
guys 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 Thanks
cya tmrw gud luck  :)