CAIE A Level Biology 9700 · The mitotic cell cycle
You are examining a skin wound healing process. Describe the structure of a chromosome during metaphase of mitosis, including the roles of DNA, histone proteins, sister chromatids, the centromere, and telomeres. Outline how the mitotic cell cycle ensures that the resulting daughter cells are genetically identical. Explain the importance of mitosis for stem cell-mediated tissue repair. Finally, state one consequence of uncontrolled cell division.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
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