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Edexcel BIOLOGY Doubts!!!!

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Dento:
ok here we go,
-why do we measure the initial rate of reaction?
-what was it for the mcq which was about the DNA, is it 2 pentose sugars joined together or 2 phosphates?
-what was the stagr of the cardiac cycle and the reason?

Kim:

--- Quote from: Pharma on May 26, 2010, 11:54:03 am ---ok here we go,
-why do we measure the initial rate of reaction?
-what was it for the mcq which was about the DNA, is it 2 pentose sugars joined together or 2 phosphates?
-what was the stagr of the cardiac cycle and the reason?

--- End quote ---

lol
ok
well i wrote because durin the beginning the substrate n enzyme are in large concentration so none will act as a limiting factor so we measure initial rate to get reliable value because after sumtime the rate would change
for 2 it was a phosphate joined to a pentose sugar
it was diastole because the heart was completely relaxed

Dento:
i wrote because at the begining, the reaction's rate is at its maxiumum as the conc. is at maximum too.
for the second one, i made it 2 pentoses joined together ;D dono wat made me do so,
and i wrote diastole too but i wrote a different reason which is related to valves  ;D

Kim:

--- Quote from: Pharma on May 26, 2010, 12:02:23 pm ---i wrote because at the begining, the reaction's rate is at its maxiumum as the conc. is at maximum too.
for the second one, i made it 2 pentoses joined together ;D dono wat made me do so,
and i wrote diastole too but i wrote a different reason which is related to valves  ;D

--- End quote ---

lol no prob
i messed up in the number of ppl
loosin 3 marks haha
i am sure they will give u marks for dat
yay so overall we both did well ;D

Dento:
number of people was 310  ;D
the easiest question was the one about tumours, it was lovely  ;D
and what did u write for the von bla bla factor question where they said use ur knowledge of the blood clotting process???

and the one abotu cystic fibrosis, there were 2 questions,
one said how a gene mutation results in ......
and the second was why ppeople infected with cystic fib. will be infected with this bacteria rather than people having no cysticc fib.

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