Compare4 marksStandard
A student places a plant leaf cell and a red blood cell into separate beakers of distilled water. Compare the effects on each cell. Explain your answer in terms of water potential.
CAIE A Level Biology 9700 · Cell membranes and transport
Cell membranes and transport: compare question
How this question is marked
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
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