Hey there! Sign in to join this conversationNew here? Join for free

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

  • View Poll Results: How did you feel the F212 exam went?
    Awesome
    14
    9.46%
    Good
    50
    33.78%
    Okay
    53
    35.81%
    Bad
    16
    10.81%
    Rubbish
    8
    5.41%
    Not Sure
    7
    4.73%

    Offline

    20
    ReputationRep:
    (Original post by MrMeep2580)
    why the grey squirrel populus may be lower than the red squirrel even though the sampling of people says the opposite?

    I put:
    Red squirrels only come out at night, people not around at night.
    Grey squirrels may be counted twice by two different people.
    put the recounting bit
    also put may be mistaken for same species or other species of squirrel as they appear similar
    Offline

    0
    ReputationRep:
    For the 7 mark phagocyte question, it said describe how pathogens are destroyed AFTER the antigens are presented on the phagocyte cell surface. So surely this question was requiring you to talk about the cell-mediated response and T lymphocytes differentiating into T killer cells and secreting H2O2 into infected cells? I wrote about phagocytosis too just in case
    Offline

    11
    ReputationRep:
    For the squirrel question - I put its part of a food chain or ecosystem and aesthetic value- it's been like that for every question of that type before surely it's right


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    When "Stahl" came up, did anyone else think of General Stahl from Killzone 3?
    Please don't say I'm the only 1.
    Offline

    12
    ReputationRep:
    (Original post by theCreator)
    I put because grey squirrels are in plain sight more often since they are mostly on the ground. Then I also put they may have counted some squirrels twice.

    I don't think red squirrels come out at night...Squirrels aren't nocturnal.
    The answers were in the question.

    Red are more scared of humans, therefore they're harder to spot.
    Red spend more time in trees, therefore they've harder to spot.

    Of course, I jazzed up the answers a bit in the exam.
    Offline

    0
    ReputationRep:
    (Original post by krishkmistry)
    Anyone put high tensile strength for the property of collagen ?


    Posted from TSR Mobile
    yer
    Offline

    0
    ReputationRep:
    (Original post by MrMeep2580)
    why the grey squirrel populus may be lower than the red squirrel even though the sampling of people says the opposite?

    I put:
    Red squirrels only come out at night, people not around at night.
    Grey squirrels may be counted twice by two different people.
    I wrote a population of them may have died out in a different area

    And forgot what else. I suppose youre right mt mind went blank for.these

    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by kayess67)
    for the 7 mark phagocyte question, it said describe how pathogens are destroyed after the antigens are presented on the phagocyte cell surface. So surely this question was requiring you to talk about the cell-mediated response and t lymphocytes differentiating into t killer cells and secreting h2o2 into infected cells? I wrote about phagocytosis too just in case
    omg i put about phagocytosis, am i wrong ffs
    Offline

    11
    ReputationRep:
    (Original post by Kayess67)
    For the 7 mark phagocyte question, it said describe how pathogens are destroyed AFTER the antigens are presented on the phagocyte cell surface. So surely this question was requiring you to talk about the cell-mediated response and T lymphocytes differentiating into T killer cells and secreting H2O2 into infected cells? I wrote about phagocytosis too just in case
    It said after its attatched to the phagocyte


    Posted from TSR Mobile
    Offline

    15
    ReputationRep:
    Way too many ecological questions. Also way too many questions that were unclear what you needed to answer, especially the first question (primary structure is what I put down but it could have been protein or polypeptide also).
    Offline

    0
    ReputationRep:
    The first question on the enzymes section
    What was the answer?
    Offline

    12
    ReputationRep:
    (Original post by Kayess67)
    For the 7 mark phagocyte question, it said describe how pathogens are destroyed AFTER the antigens are presented on the phagocyte cell surface. So surely this question was requiring you to talk about the cell-mediated response and T lymphocytes differentiating into T killer cells and secreting H2O2 into infected cells? I wrote about phagocytosis too just in case
    Welp, I just spoke about phagocytosis :3 I'm stuffed.
    Offline

    2
    ReputationRep:
    (Original post by ellie2996)
    Help!

    Did you have to draw the amino acid or write its formula!?!
    Had to draw it i think
    Offline

    1
    ReputationRep:
    (Original post by theCreator)
    I put because grey squirrels are in plain sight more often since they are mostly on the ground. Then I also put they may have counted some squirrels twice.

    I don't think red squirrels come out at night...Squirrels aren't nocturnal.
    I put grey squirrels can fly so are often seen around and red squirrels are highly susceptible to getting eaten by dogs so they hide in the trees a lot.
    Offline

    3
    ReputationRep:
    (Original post by theCreator)
    omg i put about phagocytosis, am i wrong ffs
    No you're right, after the pathogen attaches to the phagocyte, phagocytosis occurs


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by Liamnut)
    Welp, I just spoke about phagocytosis :3 I'm stuffed.
    Same I could have sworn it said the process of it to the point of it presenting antigens on its surface, I even double checked!
    Offline

    12
    ReputationRep:
    (Original post by CCFielding)
    I put animalia because it was in the domain eukaryotae?


    Posted from TSR Mobile
    Tardigrades (commonly known as waterbears or moss piglets)[2] are small, water-dwelling, segmented animals with eight legs.
    Offline

    11
    ReputationRep:
    (Original post by Liamnut)
    Welp, I just spoke about phagocytosis :3 I'm stuffed.
    100% sure it said after its attatched to the phagocyte and phagocytosis is what I put too


    Posted from TSR Mobile
    Offline

    18
    ReputationRep:
    (Original post by Liamnut)
    Welp, I just spoke about phagocytosis :3 I'm stuffed.
    No its just phagocytosis i think
    Offline

    0
    ReputationRep:
    what about 2 specific reasons on the importance of conserving the red squirrels in northcumbria or something like that?
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Has a teacher ever helped you cheat?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Write a reply...
    Reply
    Hide
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.