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  1. C

    A level Biology: Post your doubts here!

    It's A because replication of DNA is during S phase of interphase. Interphase and mitosis are part of the cell cycle but interphase is not part of mitosis.
  2. C

    Mathematics: Post your doubts here!

  3. C

    A level Biology: Post your doubts here!

    Fixed the link.
  4. C

    A level Biology: Post your doubts here!

    Hello all. Here are some websites that I found useful for the histology part of paper 3. respiratory system: https://www.histology.leeds.ac.uk/respiratory/conducting.php medcell.med.yale.edu/histology/respiratory_system_lab.php (scroll down to the 'slides' section blood...
  5. C

    Mathematics: Post your doubts here!

    There is a website for examiners where they upload the papers earlier than to the public. I'm guessing some examiner was kind enough to pass it on to the students.
  6. C

    Mathematics: Post your doubts here!

    I got it. g(x) is defined for x > 2. When x=3, f(3)=10. but g(x) is only defined for 2 < x <4 so this is not valid.
  7. C

    Mathematics: Post your doubts here!

    If you derive g(f(x)), you end up getting gf(x) = x . I still do not understand why this is not supposed to be possible. Could you share a pic of what the mark scheme says?
  8. C

    Mathematics: Post your doubts here!

    I would really appreciate it if you could tell me where to get it, I can't seem to find it :)
  9. C

    Mathematics: Post your doubts here!

    Which paper is this?
  10. C

    Mathematics: Post your doubts here!

    To add to this: Visually, D can be thought of being between BC or infront of C, like so: B (D) C (D)
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