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OCR Biology F212 Revision [3rd June 2013] (Now Closed)

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The biology grade boundaries are never that high, i'm thinking between 70-75 depending on how well people wrong the answers :smile:

hoping for lower obviously :P

Very true actually :smile:

but the paper was quite easy .. I hope it's 70ish because I counted about 80 marks :smile:

Reply 1821

MrMeep2580

Original post by GirlWithADream

What was the answer for;
Why are phagocytes in non-specific response? (or whatever it said)
I said that phagocytes aren't specific to pathogens because they dont have surface receptors that are complementary to the shape of the pathogen's antigens. Am I right?
And is my spelling of complementary correct? Or is it complimentary?

I put that they aren't specific to anitgens, they engluf and digest all pathogens.

what did you say about the secondary response one?

Reply 1822

Dr. Django

Original post by lucindaellaaa

This exam was so wonderful, I loved how many biological molecules questions there was. Drawing an Amino Acid; easy marks; the collagen and haemoglobin question was class too! :smile:

And the DNA/RNA questions. The 7 marker on phagocytosis was amazing too, and selective breeding (I wrote about artificial selection too), I think it was an easy paper tbh! DEG And Ethanol was a good question, i think a few people got confused about the fact it was an Enzyme. The last question too, with the classification and phylenology, it was lovely.
Btw, did you guys put C and B for the phagocytes? I think you'll need both.
#Thirdtimelucky :smile:

I think the grade boundaries will be really high tbh.

It was a decent paper but I don't think it was that much easier than any of the recent ones so I reckon max 72 min 68 for an A

Reply 1823

Munrot07

Original post by Liberty.

Didn't it point to a blank one? That would be terribly mean of them :frown:

It did point to a blank one but it was bonding to a G so it must have been a C

Reply 1824

emilyramsden

I wrote about selective breeding for the long term protection of the potato plants but did anyone else put anything about pesticides and chemical drugs for short term protection?

Reply 1825

own

Original post by GirlWithADream

I believe I said they go around the body searching for anything with foreign antigenic material on it and digesting it

Reply 1826

niceguy95

What did people write for selective breeding resistance Questions, because there seems to be a bit off confusion

Reply 1827

lucindaellaaa

Original post by GirlWithADream

I put for the non-specific one that they will engulf/attack any foreign organism in the body, not just a specific pathogen hence why it's non specific. You're right too, but it depends what their looking for :smile:

I put complimentary, like Compliment but in the book it has complement so who knows :smile:

Reply 1828

own

Original post by emilyramsden

I wrote about selective breeding for the long term protection of the potato plants but did anyone else put anything about pesticides and chemical drugs for short term protection?

Yeah I wrote it thinking, I, not going to get any marks for this but oh we'll...hah

Reply 1829

lucindaellaaa

Original post by Dr. Django

It was a decent paper but I don't think it was that much easier than any of the recent ones so I reckon max 72 min 68 for an A

I've done the paper three times and this has been the easiest one, but I hope you're right :')

Reply 1830

Liamnut

Original post by jackitsme

tb is spread by water droplets and extange of bood fluids...

You're a little bit silly aren't you. We were talking about my low income groups would be at risk of catching TB. Not how TB is spread.

If you don't believe me, go and check the hienman textbook that's endorsed by OCR.

Reply 1831

Liberty.

Original post by Munrot07

It did point to a blank one but it was bonding to a G so it must have been a C

I thought they would prefer the picky-ness of the nitrogenous in nitrogenous base. :colone:

Reply 1832

own

Original post by PreppyNinja

I made so many silly mistakes today. A lot of easy marks. I think it was because of sleep depravity lol

I forgot to put the R group in the amino acids. I also forgot to put insolubility in collagen. I also put Falciparum for Tb lol
Those are the ones I made.
I hope I do better in Chem

Don't worry about the insolubility, that's not a structure of collagen, that's a property

Reply 1833

GirlWithADream

Original post by MrMeep2580

I put that they aren't specific to anitgens, they engluf and digest all pathogens.

what did you say about the secondary response one?

I said something along the lines of: the phagocytes activate when the pathogens get passed the primary defences such as the skin and mucus, thats why they are "secondary" . I hope this gets me the marks. What did you write?