edexcel biology unit 2 and 3b

Biology exam discussion - share revision tips in preparation for GCSE, A Level and other biology exams and discuss how they went afterwards.

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  1. Nightwalker's Avatar
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    • Posts: 9
    Re: edexcel biology unit 2 and 3b
    (Original post by danger-.-)
    oh =$ many thx to you ! =p
    have any prediction on the article ? =p
    Anytime.

    I'm very bad at predicting these stuff. Although I have a feeling totipotency may come. (Now I must have jinxed it and we get Mitosis). I heard that there's going to be something from risk factors - again not really sure about this. The article should be alright. Just read it carefully and know where they talk about the ethical, social, economical and environmental issues. They always ask something related to that. Other than that, just be confident. You'll do great.
  2. dunia.hatabeh's Avatar
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    Re: edexcel biology unit 2 and 3b
    (Original post by Nightwalker)
    Anytime.

    I'm very bad at predicting these stuff. Although I have a feeling totipotency may come. (Now I must have jinxed it and we get Mitosis). I heard that there's going to be something from risk factors - again not really sure about this. The article should be alright. Just read it carefully and know where they talk about the ethical, social, economical and environmental issues. They always ask something related to that. Other than that, just be confident. You'll do great.
    what do you mean by risk factors?
  3. danger-.-'s Avatar
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    Re: edexcel biology unit 2 and 3b
    guyz can you write me the steps that occur in g1,s,g2 phase in interphase ??
  4. danger-.-'s Avatar
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    • Posts: 64
    Re: edexcel biology unit 2 and 3b
    (Original post by Nightwalker)
    Anytime.

    I'm very bad at predicting these stuff. Although I have a feeling totipotency may come. (Now I must have jinxed it and we get Mitosis). I heard that there's going to be something from risk factors - again not really sure about this. The article should be alright. Just read it carefully and know where they talk about the ethical, social, economical and environmental issues. They always ask something related to that. Other than that, just be confident. You'll do great.
    heh.. ya thx ! =p
    best of luck to you man !!
  5. Nightwalker's Avatar
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    Re: edexcel biology unit 2 and 3b
    (Original post by danger-.-)
    guyz can you write me the steps that occur in g1,s,g2 phase in interphase ??
    G1 - Synthesis of new DNA and histone proteins and synthesis of new cell organelles.
    S stage - Replication of the DNA that cause the DNA number to multiply.
    G2 Stage - Replication of the cell organelles synthesized in G1 and synthesis of other RNA and proteins.

    ^ Again don't need to know this. Just know the stages of Mitosis - Prophase, Metaphase, Anaphase and Telophase.
  6. Nightwalker's Avatar
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    Re: edexcel biology unit 2 and 3b
    (Original post by dunia.hatabeh)
    what do you mean by risk factors?
    The risks involved in high blood pressure or heart rate - CVD's. That sort of stuff.
  7. danger-.-'s Avatar
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    Re: edexcel biology unit 2 and 3b
    (Original post by Nightwalker)
    G1 - Synthesis of new DNA and histone proteins and synthesis of new cell organelles.
    S stage - Replication of the DNA that cause the DNA number to multiply.
    G2 Stage - Replication of the cell organelles synthesized in G1 and synthesis of other RNA and proteins.

    ^ Again don't need to know this. Just know the stages of Mitosis - Prophase, Metaphase, Anaphase and Telophase.
    dude thank you so much ! =p
    oh lol ok sure =p !
  8. danger-.-'s Avatar
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    Re: edexcel biology unit 2 and 3b
    do we need to know how to standardize maceration ??
  9. danger-.-'s Avatar
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    Re: edexcel biology unit 2 and 3b
    how to make the totipotincy experiment more reliable ?
  10. Nightwalker's Avatar
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    Re: edexcel biology unit 2 and 3b
    (Original post by danger-.-)
    do we need to know how to standardize maceration ??
    Standard Maceration by mounted needles. I don't know, maybe pressing 5 times or something.
  11. Nightwalker's Avatar
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    Re: edexcel biology unit 2 and 3b
    (Original post by danger-.-)
    how to make the totipotincy experiment more reliable ?
    Check the last post on Page 5.
  12. danger-.-'s Avatar
    • Junior Member
    • Posts: 64
    Re: edexcel biology unit 2 and 3b
    (Original post by Nightwalker)
    Standard Maceration by mounted needles. I don't know, maybe pressing 5 times or something.
    oh thank you again ! =p
  13. avipsita's Avatar
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    Re: edexcel biology unit 2 and 3b
    Well that exam was a bummer
  14. 0708's Avatar
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    Re: edexcel biology unit 2 and 3b
    *************************
  15. MarshmallowBob's Avatar
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    Re: edexcel biology unit 2 and 3b
    LAWL. lol. whatever happened happened. lol.
  16. TheMJCG's Avatar
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    • Posts: 174
    Re: edexcel biology unit 2 and 3b
    Th exam was different to previous papers, what was the answer to the last question about treatments other than acupuncture?
  17. verdikt's Avatar
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    • Posts: 96
    Re: edexcel biology unit 2 and 3b
    (Original post by TheMJCG)
    Th exam was different to previous papers, what was the answer to the last question about treatments other than acupuncture?
    I wrote about drugs and it's side effects and linked almost everything related to drugs from the article.
    Did any of you guys draw 2 piecharts about that question asking for visual representation? And what did you have to write on comment about validity?

    FYI thanks to the article, this paper officially was the worst of them all. Difficulty somewhere next to the paper which had garlic on bacteria.
    Last edited by verdikt; 07-05-2012 at 12:06.
  18. dunia.hatabeh's Avatar
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    Re: edexcel biology unit 2 and 3b
    what in the world was that ?! the second question especially was so frustrating
  19. 0708's Avatar
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    Re: edexcel biology unit 2 and 3b
    for the visual i did a bar chart

    and for the last question i referred that the treatment could be improved using safer equipment and sterile conditions..to reduce the side effects and injuries caused
  20. 0708's Avatar
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    • Posts: 17
    Re: edexcel biology unit 2 and 3b
    hmmm about validity..... i took the information given in paragraphs which was not related t the table given at all ..so not valid...and the other info was valid because sources were given and data
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