Biology 9700 · AS & A Level · Photosynthesis as an energy transfer process

Photosynthesis as an energy transfer process — practice question

Chloroplasts perform photosynthesis. Fig. 1.1 illustrates several structural features of a chloroplast and a number of processes that take place inside it.
(a(i))[1]

Identify the structures marked A in Fig. 1.1.

(a(ii))[4]

Explain how the structure and appearance of the granum, together with the components labelled A, are linked to their function.

(b(i))[1]

Identify the metabolic pathway shown as cycle C in Fig. 1.1.

(b(ii))[2]

Explain why pathway C is called a cycle.

(c(i))[2]

Identify the photosynthesis products labelled B and D in Fig. 1.1.

(c(ii))[3]

Suggest and explain the importance of glucose and the product labelled B in Fig. 1.1 for ecosystems.

Worked solution & mark scheme

This 13-mark question has a full step-by-step worked solution and mark scheme. One marking point: thylakoid / thylakoids

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