AQA A2 Biology BIOL5 - 17th June 2015

I dont understand this foolishness. Your telling me that the enzyme for ATP doesnt directly break down ATP. So I guess amylase doesnt directly break down starch and maltase doesnt directly break down maltose and protease doesnt directly break down proteins? Damn. You sure?

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anyone else do 10a and write about variation/natural selection and selection pressures?

Nah I think if we had a week before the unit5 exams after unit 4 exams in general I would have done miles better in them. I have literally had one exam everyday since last week. I do maths, chem, bio, physics, because of this I think I have missed the A* in all those subjects. In biology it will depend on boundaries, God and the examiners mercy.

what page is the unofficial mark scheme on?

What question was this??

anyone else do 10a and write about variation/natural selection and selection pressures?

So question. I focused mainly on section A so for the essay, 10a, I wrote about two and a quarter pages. The main points were endotherms, ectotherms and behavioural responses to heat ect.
Respiration, control of the cardiac cycle through homeostasis, action potentials, a bit on receptors and a bit on co2 effect on haemoglobin to qualify my control of the cardiac cycle. I am a tad worried that my essay may not have contained enough. However, the points I did make were rather heavily detailed and I made sure to relate them back to the question.

What do you guys think?

I wasn't entirely sure for the first question, I know I got the first one wrong because I put anisotropic band but I think it was actin, then the second I put ATPase, then the third I put troponin instead of tropomyosin but it should be tropomyosin right? Oh dear

There isn't one but a couple of us have shared our answers, see pages 102 and 105, posts 2034 and 2084 I think!