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

  • View Poll Results: How did you feel the F212 exam went?
    Awesome
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    50
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    Okay
    53
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    16
    10.81%
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    8
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    (Original post by Unsworth)
    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
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    Does anyone have a copy of the paper
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    (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!



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    (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
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    any one got a copy of the paper please?
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    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:
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    (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?
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    (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.
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    (Original post by theCreator)
    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.
    Yeah pretty much exactly the same for me

    Hope we get our grade
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    [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
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    73/74 for an A seems fair,but in actual reality to the difficulty of most questions,that's low


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    (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
    I did it like that as well


    Loved this paper soso much! Compared to the F211 one, it was beautiful Now to hope Chem is like this tomorrow..
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    JUSTIN BEIBER IS DEADD !!
    Thanks for looking, may someone tell me the amount of marks needed for 110ums? ( only need that for an A )
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    (Original post by zangorou)
    I did it like that as well


    Loved this paper soso much! Compared to the F211 one, it was beautiful Now to hope Chem is like this tomorrow..
    High five for mathsy people!

    Yeh...lets hope so!
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    Please let F322 be like this tomorrow


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    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...
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    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
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    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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    EIA? Could I have said they take into account the size of the area
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    (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
    That's what gets you the mark

    Look at 7ai) same Question but haemoglobin instead

    http://www.ocr.org.uk/Images/59950-q...and-health.pdf

    And the markscheme

    http://www.ocr.org.uk/Images/61817-m...th-january.pdf
 
 
 
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