CAIE A Level Biology 9700 · Photosynthesis
Chloroplasts have thylakoid membranes arranged in stacks called grana, connected by intergranal lamellae. The stroma is the aqueous fluid that surrounds the grana. Describe how this structure is adapted for the light-dependent and light-independent stages of photosynthesis.
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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