AS Biology f212 26th May 2011

I said totally resistant......

but like most answers, I probs got this wrong too.....

Yeah, I agree that there was very little theory in general. All the questions seemed to have a data element which I always feel is exam technique rather than knowledge - this may benefit some, but I would've preferred a paper heavy with theory such as: transmission of malaria, biological molecules test, enzyme-substrate complexes, immune system, etc.

Also, for the question about insecticides. Did everyone talk about natural selection, but just said that the resistance was to a certain concentration of insecticide rather than being totally resistant?

Also, for the question about insecticides. Did everyone talk about natural selection, but just said that the resistance was to a certain concentration of insecticide rather than being totally resistant?

For one of the questions about biological molecules (the one with all the pictures where you had to choose letters), did you guys put the last 2 ones as F (the haemoglobin looking-thing)? Where it asked to give the letters of where disulfide and peptides bonds would be...? Didn't seem right to put 2 of the same letter right after each other, but I couldn't think where else they would be!

Yeah, I agree that there was very little theory in general. All the questions seemed to have a data element which I always feel is exam technique rather than knowledge - this may benefit some, but I would've preferred a paper heavy with theory such as: transmission of malaria, biological molecules test, enzyme-substrate complexes, immune system, etc.

Also, for the question about insecticides. Did everyone talk about natural selection, but just said that the resistance was to a certain concentration of insecticide rather than being totally resistant?

Same here. A nice 9 marker of quantitative analysis of reducing sugar content would have been great. Or the entire structure of a haemoglobin molecule. With the science-y questions you can practically 'mark' your answers yourself if you've done enough past papers. I found myself waffling so much today as I really had no clue what Mr OCR wanted from me! I mean seriously, how many bloody graphs do you want me describe!

And I talked about them gaining resistance, rather than being totally resistant. So you have to increase the concentration of insecticide in order to kill the more resistant organisms.

I think they were trying to trick you, but you were right - with those questions, they usually say when you can't use a letter twice.

yeh and which 2 did u put down as the molecules which can store? i put down glucose and i put down the triglyceride aswell which was wrong!

I cant!!! lol


all i can think about is this blumin exam.....................

and I also hate the fact they make us wait so long for results.....

True, I think I know which question you're on about in c2 as well (edexcel, by any chance?) I found this exam incredibly frustrating. I revised a lot for this exam, did lots of past papers, all that you should do but a lot of it seemed wasted. The amount of actual scientific facts that were required was very little, very annoying when you've learnt every single detail about all the condensation reactions for example. Ah well...

i totally agree but i guess u have to consider that they have to mark like thousands of papers

hate revising for chemistry what u revising ??

i totally agree! i guessed at the answer to the radius question and i guessed right, the answer was 2 (:

I think they were trying to trick you, but you were right - with those questions, they usually say when you can't use a letter twice.

chemistry lol.....well Im meant to be anyway lol

i seriously cant physically do it lol im getting to stressed over this, I know its over and all, but even so

I'll try having a good nights rest today, and then do like 2 hours of revision tomorrow morning in school.....
My summer ain't going to go too brilliantly now lol all i'll be doing is thinking about my results and how poor I've done....

wbu?? what are you revising

i wrote just PHOSPHATE instead of PHOSPHATE GROUP
and for the suger i wrote "5-carbon sugar (deoxyribose)"

wud dat b da 2 marks?

Ahh thank you.

Agreed about all the graph questions, I was relieved after the first one was over early on because I hate those types of questions... only to discover there were about 2-3 more waiting.

For the one about Influenza, where it asked how the pill could stop the virus from spreading, was it asking about spreading throughout the body, or throughout a population of people?
I said something like it takes up the active site, thus the virus can't break down the cell wall and leave, thus can't spread (and eventually gets broken down by lysosomes). Oh dear..

Ahh thank you.

Agreed about all the graph questions, I was relieved after the first one was over early on because I hate those types of questions... only to discover there were about 2-3 more waiting.

For the one about Influenza, where it asked how the pill could stop the virus from spreading, was it asking about spreading throughout the body, or throughout a population of people?
I said something like it takes up the active site, thus the virus can't break down the cell wall and leave, thus can't spread (and eventually gets broken down by lysosomes). Oh dear..

oh noo you will do great tmrw and then u will be laughing all through summer !
well i was revising chemistry for a bit just but got put of thankfully have all morning to revise tomrw
i spent most of that so called revision trying to calculate what i need to get in the paper to get an A loool!
how did u do in january for bio and chem??