AQA BIOL5 Biology Unit 5 Exam - 22nd June 2011

what the was that one about hormones? it was worded really strangely and it confused me. like it said describe how hormones affect differently? it was something like that. what did people write?



what the hell?! siRNA?! the smallest little chunk of the entire chapter 16 and there was a whole question on it! damn it!

maybe that is for the 2nd mark. but even if there were ACh in the postsynaptic the impulse is only unidirectional due to the receptors

I haven't checked the book yet but I think hormones affect target cells hwith complementary receptors and local cell mediators or whatever they're called (histamine, prostaglandin etc.) affect all proximal cells regardless.

Could be wrong though.

I haven't checked the book yet but I think hormones affect target cells hwith complementary receptors and local cell mediators or whatever they're called (histamine, prostaglandin etc.) affect all proximal cells regardless.

Could be wrong though.

I have high hopes for Chem 5 though, I find it a lot easier than Chem 4 and Biol 5. Inorganic chemistry = keeps me happy. The 12 mark questions on the different colours is a bit ridiculous though. If only I could go back in time to year 11 when I was picking my AS levels, I would have picked something like History or Psychology instead of crappy Biology.

I put hormones bring about a chemical response eg.. activating a transcriptional factor or something, where as chemical mediators bring about a physical response.. eg.. swelling of arterioles and increased blood flow, but that was a guess too.

I dropped history lowest of my grades and hardest out of biol , chem and geography seriously

*interrupts*
Psychology is pretty crap too

Some hormones bring out a physical response though eg Testosterone and increased hair production

I'm downing a bottle of vodka pre results. 5am. Then I'll be able to manage

Did nobody do the DNA essay? i thought that was a beaut! made up for the stupid questions on this essay that hardly related to this unit!

What did you put for the question that said why hydrolysis and condensation reactions are important in the protein synthesis?
I said that hydrolysis is needed for ATP which releases energy to make the proteins, and condensation is needed because it joins the amino acids together to form a peptide bond?

Yes but at least I can get a decent grade in it and it is classed as a "soft" science.

Good idea, just come back from a night on the town

what did everyone put for the about the weird protein, calliphoren or something like that? And why it can become adult proteins? Such a horrible paper! Needed an a, just hoping for low grade boundaries! I thought june 10 was hard but this was ridiculous apart from the essays!