CAIE A Level Biology 9700 · Biological molecules
A botanist compares starch extracted from potato tubers and from maize seeds. Both are mixtures of amylose and amylopectin, but the proportions differ. Describe how the structures of amylose and amylopectin are adapted for their function as energy storage molecules in plants.
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.
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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