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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?
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    Jan 2013 paper and mark scheme anyone???
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    Ugh citokines explanation on how it communicates with B-lymph, pretty please?
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    (Original post by wingscarletx)
    Ugh citokines explanation on how it communicates with B-lymph, pretty please?
    Sure!
    The release of cytokines following the final stages of T-lymphocyte Clonal Selection - will only activate the B-lymphocytes with the presence of the T-helper cells.
    Taking an educated inference, this would involve the T-helper cells administering the cytokine-antibody communication triggering a series of chemical reactions - which will then stimulate the mitotic division into plasma production.

    I just used my knowledge on cell signalling and pieced a logical thought together!



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    (Original post by Kitnimohabbathai)
    Jan 2013 paper and mark scheme anyone???
    Here you go!
    Attached Images
  1. File Type: pdf F212_MS_Jan13.pdf (272.2 KB, 60 views)
  2. File Type: pdf F212-01Jan13.pdf (236.7 KB, 64 views)
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    (Original post by Nas.)
    I'm pretty damn stressed about Module 3.
    Does anyone have any good notes that aren't like 50 pages long, something that I can use to memorize.
    I have some notes that might be useful!?
    My notes are A5 to prevent me from waffling on unnecessary content.
    I so... Don't know if it will help!?



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    (Original post by Ché.)
    Sure!
    The release of cytokines following the final stages of T-lymphocyte Clonal Selection - will only activate the B-lymphocytes with the presence of the T-helper cells.
    Taking an educated inference, this would involve the T-helper cells administering the cytokine-antibody communication triggering a series of chemical reactions - which will then stimulate the mitotic division into plasma production.

    I just used my knowledge on cell signalling and pieced a logical thought together!



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    All I can remember is that darned image of a T-cell bumping into a B-cell from a video I watched, Lol.
    B
    ut thanks nevertheless!
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    (Original post by Kitnimohabbathai)
    Jan 2013 paper and mark scheme anyone???
    hi, enjoy and good luckF212_MS_Jan13 (1).pdf

    paper= http://www.scribd.com/fullscreen/120...brdfj3drdv8ijl
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    (Original post by Ché.)
    I have some notes that might be useful!?
    My notes are A5 to prevent me from waffling on unnecessary content.
    I so... Don't know if it will help!?



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    That would be great.
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    Cheers for that mastermdc, i'll give it a good read in the morning.
    Anyway, good luck to you guys, let's all pull through!
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    (Original post by mtaki14)
    here you go!
    thank you sooooooooooooooo much!!!!!!!!!!!!!!!!!!!!!!!!
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    thank you!!!
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    GOOD LUCK EVERYONE!!! guess i'm the only person still awake :P exam in 6 hours!!!!
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    Barely slept; probably down to nerves, time to get to work on last minute revision.
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    (Original post by Kitnimohabbathai)
    GOOD LUCK EVERYONE!!! guess i'm the only person still awake :P exam in 6 hours!!!!
    You was joined by me as well around that time!
    Good luck to you, too!



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    three factors that increase the chance of infection with tb?
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    (Original post by Danny786)
    three factors that increase the chance of infection with tb?
    FACTORS:
    - Poverty, poor hygiene awareness, homelessness;
    - The habitat that were around regularly - work, school.
    - International connections - holiday travelling to specific countries increases your chances of transmission.
    - Weakened immune system from other contributory factors.




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    (Original post by Danny786)
    three factors that increase the chance of infection with tb?
    poor ventilation
    overcrowding
    homelessness

    how did I do?
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    (Original post by ThePremierLeague)
    poor ventilation
    overcrowding
    homelessness

    how did I do?
    Yep, thats correct!
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    When proteins are heated to a high temperature their tertiary structure is disrupted.

    How does this happen?
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    (Original post by ThePremierLeague)
    poor ventilation
    overcrowding
    homelessness

    how did I do?
    Full marks.
    (If that was a question and all)!


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