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

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Reply 1500

MrMeep2580

Original post by krishkmistry

Anyone put high tensile strength for the property of collagen ?

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thats accepted along with flexible :biggrin:

Reply 1501

LostPlanet2Luke

For the people worrying about the 7 mark phagocytosis question, do not worry too much on that. I am currently in your position for my chemistry unit 1. This paper is out of 100, 5 marks lost is not a tragedy by any means....in unit 1 YES, in unit 2, not really.
Anyhow....there were definitely 2 awardable points there I reckon.

Btw guys....for collagen question, I put "left SIDED helices". Do you reckon that is awardable?

Reply 1502

niceguy95

Original post by Loiks94

Was the kingdom animale or protoctist for the water bear and why?

Protocrista due to size (0.1 micro meters) and it being a water bear

Protoctusta are usually found in water

Reply 1503

Moon1ight

Original post by MrMeep2580

thats accepted along with flexible :biggrin:

Put flexible and crossed it out considering its blood vessel

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Reply 1504

otrivine

Original post by MedMed12

well done you!!
yeah it was a nice paper I got 80/100 on that as a mock and A was 71
just so annoyed at my silly mistakes as its easy UMS to save on A2 papers :/ I did well in f215 mock so hopefully the real thing I might/could be OK with.
Was initially aiming for full UMS on this paper :P such a fail aha!

Dont worry, you will get it :smile:

you still got 2 more papers for biology! Still a lot of chance :wink:

Reply 1505

LostPlanet2Luke

Original post by MedMed12

could be that too
or insoluble

WOO! I put collagen is insoluble. No point having collagen in blood vessels if it dissolves in blood or water.

Reply 1506

MrMeep2580

Original post by krishkmistry

Clever question that,got to give it to OCR

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yeah really was :smile:

for the amino acid general formula question did you draw it out with a carboxyl, amine and R group? :biggrin:

Reply 1507

LucyQ

Oh dear, I put Tuberculosis mycobacterium, wrong way round :/

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Reply 1508

WillGC

I put collagen is mad eup of three alpha chains

Reply 1509

niceguy95

Original post by Dr. Django

For the amino acid question instead of writing out the formula I drew an amino acid and labelled it :/

Thats right, I just could not write the displayed formula on here

Reply 1510

Midnight1811

Original post by MarkProbio

Personally I loved this paper.

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how did you revise for this paper ?

Reply 1511

ellemcjelly

where did you draw the bands of dna on the test tubes?

Reply 1512

scienceboy16

Original post by krishkmistry

Anyone put high tensile strength for the property of collagen ?

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Me! I hope thats right?

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Reply 1513

Andyfrog321

For the 7 marker on phagocytosis I started off talking about the immune response -_-
I then labeled that as 'immune response' and wrote the phagocytosis explanation..

Think they will be nice and ignore the immune response bit?

Reply 1514

MrMeep2580

Original post by krishkmistry

Put flexible and crossed it out considering its blood vessel

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well it'll need to constrict and contract so withstand a lot of high blood pressure so it being flexible allows it to do so, plus its one of the main properties of collagen.

Reply 1515

MedMed12

Original post by otrivine

Dont worry, you will get it :smile:

you still got 2 more papers for biology! Still a lot of chance :wink:

thanks

hope so, but A2 is harder. Just wish I read the questions more carefully tbh I even took a highlighter and I say this after every exams :/

Original post by LucyQ

Oh dear, I put Tuberculosis mycobacterium, wrong way round :/

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thats fine should be anyway

Reply 1516

Majeue

Structure of collagen for 6 marks? Really... And then another 3 marks on collagen differences -.- wish I'd revised collagen more. I wrote that it had a helix and had fibrils and about disulfide an hydrogen bonds an hydrophobic interactions. For the differences between haemoglobin and collagen I wrote haemoglobin isn't a helix, haemoglobin contains iron and haemoglobin doesn't have fibrils. Can anyone guess how many marks ill get? :s

Reply 1517

username1107833

Original post by krishkmistry

Exam was fair but back me and say if you didn't revise you we're screwed.one question - I put collagen had a triple helix and haemoglobin has a double helix - I've contradicted myself haven't I ?

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I honestly thought I was going to fail going into that exam, hoped for a C. Having said that, I think I got an A. I didn't revise too much, my content knowledge was atrocious. But I there were loads of suggest questions which saved me. Think Grade boundary for an A will be maybe 70?