OCR Biology F212 (Molecules, Biodiversity, Food and Health)- 21st May 2012

in the CGP textbook it calls it interspecific variation (variation between species) and intraspecific variation (variation within a species)
surely it has something to do with the question?

Washing powders - genius. I ended up writing my default answer of "for medicinal purposes" because I was completely stuck.

I put J. There seems to be a range of different answers though with L being more prevalent.

Yeah, I put random and sample. Did you get Simpson's Diversity Index, Species Richness and Species Evenness as well? (Can't remember the order)

I don't think that's bad at all, that would give you like 75/100 which in theory is a B, but normally with F212, that would be an A. I dropped WAAAAAY more. Believe me. I'd be lucky to even have gained 25 marks!



Someone pleeeaaaassssseeeee upload an unofficial markscheme?

was 3 marks i said like low protein contenet disease predators e.t.c like this and for the 3 thing that has to be same i said PH concentration of enzyme and concentration of substrate ?

What did everyone put for the choose the letter question? I didn't know so I put J.

I thought I did ok on the paper but it had **** all to do with most of what we've learnt!! Too much focus on biodiversity etc

My email to OCR
To whom it may concern,
Today I sat the F212 AS biology exam and am writing to you to express my concerns.
The paper was based mainly on 2 topics; enzymes and biodiversity. There was nothing in the paper about malaria, TB or HIV/AIDS which we
have learnt, nor DNA and RNA. I find this appalling since the exam is supposed to cover the majority topics we have covered and apply the
knowledge. We haven't had a chance to display the knowledge we have acquired because the questions were only concentrated on the
aforementioned topics.
Many questions were poorly worded too. I can't remember the specifics, but in one question, I had to read it numerous times and
came to an unsatisfactory conclusion what the question was asking me; I couldn't work out if it wanted me to talk about the topic covered
in the first few sentences or the one in previous questions. A further question tried to catch you out with 'does not have' so can't make
accurate results so must estimate. How is estimation of the amount of a reducing sugar anything to do with the molecules, their structure
or anything else on the syllabus for that matter? Another gripe was the number of 'suggest' questions; this isn't the application of
biological knowledge, but a guessing game of what the marker wants to hear. Poorly worded questions only lead to confused candidates, so
why would you make questions ambiguous?
The last question of the paper, you just put as many words as you could on to one page to confuse you. It only needed 5/6. This
was just to panic a candidate at the end, surely? I suggest you think more carefully next time about how you structure and word a
question.
The only thing I was happy about was the question on smoking, though this could have been expanded further to deal with the other
aspects of smoking and health eg atherosclerosis though I know it came up on a recent paper.

Please sort it out.
Chloe Howard

We'll see what happens in August....

I thought I did ok on the paper but it had **** all to do with most of what we've learnt!! Too much focus on biodiversity etc

My email to OCR
To whom it may concern,
Today I sat the F212 AS biology exam and am writing to you to express my concerns.
The paper was based mainly on 2 topics; enzymes and biodiversity. There was nothing in the paper about malaria, TB or HIV/AIDS which we
have learnt, nor DNA and RNA. I find this appalling since the exam is supposed to cover the majority topics we have covered and apply the
knowledge. We haven't had a chance to display the knowledge we have acquired because the questions were only concentrated on the
aforementioned topics.
Many questions were poorly worded too. I can't remember the specifics, but in one question, I had to read it numerous times and
came to an unsatisfactory conclusion what the question was asking me; I couldn't work out if it wanted me to talk about the topic covered
in the first few sentences or the one in previous questions. A further question tried to catch you out with 'does not have' so can't make
accurate results so must estimate. How is estimation of the amount of a reducing sugar anything to do with the molecules, their structure
or anything else on the syllabus for that matter? Another gripe was the number of 'suggest' questions; this isn't the application of
biological knowledge, but a guessing game of what the marker wants to hear. Poorly worded questions only lead to confused candidates, so
why would you make questions ambiguous?
The last question of the paper, you just put as many words as you could on to one page to confuse you. It only needed 5/6. This
was just to panic a candidate at the end, surely? I suggest you think more carefully next time about how you structure and word a
question.
The only thing I was happy about was the question on smoking, though this could have been expanded further to deal with the other
aspects of smoking and health eg atherosclerosis though I know it came up on a recent paper.

Please sort it out.
Chloe Howard

We'll see what happens in August....

I wrote exactly the same, but then dnt know with ocr, questions on enzymes were totally out of spec, well at least didnt fit the past paper pattern.

that one was easy.
The nutrient solution contained sucrose.

yh i did random, sample, simpsons index, percentage cover and species richness,

because it doesnt have the enzymes.
however, what did people write for why there was a little amount of reducing sugar present in test tube A? i said the e coli was grown in starch so the bacteria could have released the reducing sugars...

True artwork



Spread the word

Hurrah for OCR.

Lol

yh i did random, sample, simpsons index, percentage cover and species richness,

yeah i wrote pH enzyme conc and substrate conc. too