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

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Thought it was a very nice paper for OCR's standards, especially in comparison to the awful one I sat last summer. Only question that threw me slightly was the 6 marker on collagen structure, as I was struggling for points after getting 3 down aha. 3 marker on EIA I was clutching at straws a bit too, my 3 things they have to take into consideration were:
-Length of time it will take for building to be completed
-What area (size) of habitat will be affected by the building work
-Are there any endangered species present in that habitat already

No idea whether any of those would gain a mark?

I put:

- to check if the habitat is rare
- to check if there are rare/endangered species, so that they won't be affected by the change.
- to check how much space the wind farm would take up in the habitat

Reply 2101

Adil96m

Does anyone have a copy of the paper

Reply 2102

Ché.

Original post by Samiha.M

Guess this is what happens for last min revision and not doing past papers! I did about 2 and didnt cme across that qu! And LOOOOOL i wish!! Hmm.. Really hope its atlest a B cos the paper was actually nice! Wbu?

I calculated several times my total marks realistically and on the depth of knowledge written for the marks.
I am against those "suggest" questions that seem to colloquial for an easy, accurate answer so I lost a couple in them for definite.

I just like the centrifugation question!
My luck was in store; my school hired and Senior Examiner last month and she spent time giving strategies for that EXACT question - that originates from 1985 really!
Total!?
93/100.
I can be very proud of myself; I revised a hell of a lot and this is my reward hopefully!
I hope you done great too!
I was a phenomenal paper, in my opinion!
:biggrin:

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(edited 10 years ago)

Reply 2103

Ray..

Original post by Musclemania

Im sure the biodiversity questions was three marks not two cuss I was sitting there writing out a lot of BS

Not only that, but this mark scheme adds to 92 :s

Reply 2104

exams567

any one got a copy of the paper please?

Reply 2105

Minz

3 precautions in centrifugation
-Same volume of DNA
-Same volume of sugar solution
-Same time for centrifugation

Is the first point correct? same volume of DNA? Wouldn't it determine how much is spun out if it is more or less?

I reckon grade boundaries will be about 73 for an A. Its like ocr wants everyone to suffer :unimpressed:

Reply 2106

Kits

Original post by theCreator

Was about to ask the same thing. Considering the highest its ever been is 73 (i think), maybe 72, probably at most 75

If thats the case I think I may have got it.. It was fairly straighforward though, the boundaries might be higher than we've seen. I know it's been upwards of 83 for chem.

How do you think you did?

Reply 2107

username1107833

Original post by Kits

If thats the case I think I may have got it.. It was fairly straighforward though, the boundaries might be higher than we've seen. I know it's been upwards of 83 for chem.

How do you think you did?

Yeah but chemistry boundaries generally are high, biology boundaries are generally low. I know I dropped about 10 marks for sure, then adding about 10-15 because of a specific, picky markscheme, I'm hoping I still managed to scrape an A for biology. I am most definitely dropping it, but still it would be nice to get an A.

Reply 2108

Kits

Original post by theCreator

Yeah pretty much exactly the same for me

Hope we get our grade :biggrin:

Reply 2109

Ray..

[QUOTE="Musclemania;42942150"]Im sure the biodiversity questions was three marks not two cuss I was sitting there writing out a lot of BS[/QUOTE
Only addsup to 92 :s

Reply 2110

Moon1ight

73/74 for an A seems fair,but in actual reality to the difficulty of most questions,that's low

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Reply 2111

zangorou

Original post by g.k.galloway

I put that but in r2 the one above was in line with the far right test tube

think about it like this...
in the first test tube with the band given the DNA strands were XX
after replicating once in the new nitrogen it was XY
after replicating again it was YY and XY
then the final test tube was YY

It may be wrong but it made sense to me :smile:

I did it like that as well :smile:

Loved this paper soso much! Compared to the F211 one, it was beautiful :biggrin:

Now to hope Chem is like this tomorrow..

Reply 2112

Ray..

JUSTIN BEIBER IS DEADD !!
Thanks for looking, may someone tell me the amount of marks needed for 110ums? ( only need that for an A )

Reply 2113

TheSnail

Original post by zangorou

I did it like that as well :smile:

Loved this paper soso much! Compared to the F211 one, it was beautiful :biggrin:

Now to hope Chem is like this tomorrow..

High five for mathsy people!

Yeh...lets hope so!

Reply 2114

Moon1ight

Please let F322 be like this tomorrow

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Reply 2115

LaughingGas

I reckon around:

A -70
B -64
C -58
D -52
E -46

Could be higher, could be lower, I guess we shall just wait and see until results day... :redface:

Reply 2116

ClarkyC...

Did anybody whilst writing the obvious points for collagen (triple helix, 3 pp chains) write about primary, secondary and tertiary structure? Because I found it hard to get six marks otherwise

Reply 2117

Moon1ight

I did that ,purely because there's a question on a past paper about haemoglobin that asked you to do that,although having said that,you could at least write 3 or 4 points on the property alone

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Reply 2118

ellie2996

EIA? Could I have said they take into account the size of the area

Reply 2119

niceguy95

Original post by ClarkyC...

Did anybody whilst writing the obvious points for collagen (triple helix, 3 pp chains) write about primary, secondary and tertiary structure? Because I found it hard to get six marks otherwise