CAIE A Level Biology 9700 · The mitotic cell cycle
A human cell lining the intestine divides repeatedly throughout life. However, after many divisions, the cells eventually stop dividing.
Describe the structure of a chromosome immediately after the S phase of the cell cycle. Also describe the role of telomeres in preventing the loss of genetic information during repeated cell divisions.
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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