Qualification > Sciences
IGCSE Biology Paper 3
aquarian93:
--- Quote from: Friends on June 09, 2009, 05:38:57 am ---I totally messed up with the Natural selection question[5mks]
But the paper was little bit hard compared to 2008.
Threshold will be 50/80 for A
--- End quote ---
hw do u noe abt the threshold? thats quite comforting
guys how did u find the paper!??
QuickSilver:
--- Quote from: aquarian93 on June 09, 2009, 05:54:25 am ---
--- Quote from: Friends on June 09, 2009, 05:38:57 am ---I totally messed up with the Natural selection question[5mks]
But the paper was little bit hard compared to 2008.
Threshold will be 50/80 for A
--- End quote ---
hw do u noe abt the threshold? thats quite comforting
guys how did u find the paper!??
--- End quote ---
if this threshold is wrong then it's lower haha because i have never seen something above that for a paper 3 ;) soo RELAX ;)
The Paper was Ok, kinda lengthy with some trickies but i managed :)
and i think everyone did :)
what about you?
annie_angel:
--- Quote from: thukon on June 09, 2009, 05:51:48 am ---They measure the dry mass every week. :D Im getting more and more confident that my answer has a SMALL chance of being correct.
--- End quote ---
the marks were 3 for this question....i m sure ull atleast get 1....luk on da bright side...evn 1 mark counts :)
thukon:
The natural selection answer was because the sickle cell hetero ppl cant get malaria right? So the survive due to survival of fittest, and they pass the trait onto their children right?
nid404:
--- Quote from: thukon on June 09, 2009, 05:48:41 am ---
--- Quote from: Mirzaa on June 09, 2009, 05:45:12 am ---
--- Quote from: thukon on June 09, 2009, 05:27:16 am ---Liver cells - Nucleus, Cytoplasm, and cell membrane. I hope.
Yeah, hepatic portal vein and ileum
dry mass, i put measure the amount of solution uptaken by the plants., and then subtract from original. I think its wrong.
--- End quote ---
yea thats wrond dude.... uve gotta bake the radish plant to find the dry mass..!
--- End quote ---
But the same radish has to be used for 6 weeks. How would you "bake" it without killing it? Thats what the experiment says nid. They measure the growth of the plant for 6 weeks. They wont use different plants.
--- End quote ---
they use different plants...im sure..just asked my sir
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