AQA BIOL1 Biology Unit 1 Exam - 16th May 2011

Yes! me too aha.
What grade/mark are you hoping to get?
What about the other questions I posted?

Hey, how did you find it?

Personally, I thought it went well - that is there wasn't a question on there I didn't know. That said, there was one or two odd (and in my opinion, ambiguous) questions

The first, not so ambiguous, Heart rate. Did you guys put 86.7 or 87? I was really unsure. I wrote 86.7, then changed it to 87.

On the enzyme inhibition, did you say that it blocked it's active site? Or did you actually say it combined with it? I said blocked, resulting in less enzyme-substrate complexes. The reason being, Galactose is a product of lactose, so would it really fit into the same active site?

Also, what did you put for "Describe what point A is"

The rest went a breeze. I think I got the above right, I was just unsure if you know what I mean?

hmm it was better than i thought to be honest, I think I could answer everything but the some of the questions were annoying :l
I think k just said it prevented the substrate from binding with the active site & forming an e-s complex
I basically just described where A was plotted, wbu?
mhmm I'm unsure, just hope the markscheme isnt too harsh

what did people get for the calculations?

and just wanna say I predicted the last question! so for those of you who read it, I hope you revised how the epithelial cells are adapted for gas exchange! ;D

Yes! Yes! That is exactly what I put It's a relief. The trouble is, those kind of questions (the relatively ambiguous kind) promote a sort of pot luck approach, favouring weaker candidates.

On three of the four past paper questions I got 100 UMS (worked out my mark from the UMS converter for that paper on the AQA website) soo I was well revised.

I know an A is good, but i'm believing for 100ums

You did? Predict the unit 2 one aswell in that case. ! : O

Anyone got the mark scheme?

how many raw marks is that? and can you link me to that ums converter?

How did you answer the 'evaluate the vacine' question? Alot of people said they should use antibiotics ect. but i wrote;

1. Sample size was unknown
2. Experiment was not carried out on humans
3. long term side effect was unknown
4. no control group was used.

I'm starting to doubt myself now, did i miss interprit the question?

Hopefully someone will upload one by tomorrow.

I think it was meant to ask whether or not a vaccine should be made.
I said they could use condoms intead.

Forgot what else I said.

yeah but wouldnt a vaccine mean that more of the heart tissue would get attacked ? because it contains the same protein antigens found on chlaymidia ( or however it's spelt ) thats what i put down, i took a massive gamble on that one, huh, im hoping it paid off.

Ah remember some of it now.
Yeah I put down that the heart muscle might get damaged and herd immunity. Should have said depends if the risk is greater than the side effect =.=
Forgot the rest but if I see somebody else mention it I'll remember I think.