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

Photosynthesis as an energy transfer process — practice question

Figure 7.1 shows a transmission electron micrograph of a chloroplast. A number of compounds and structures needed for photosynthesis are found inside a chloroplast.
(a)[3]

Using the labels A, B or C, complete Table 7.1 to show where four of these compounds or structures are located. You may use each of A, B and C once, more than once, or not at all. The compounds or structures are: • ATP synthase • rubisco • starch grain • phospholipid bilayer

(b)[3]

Describe and explain the pattern of results shown in Fig. 7.2.

(c)[2]

Chlorophyll b, carotene and xanthophyll are called accessory pigments. Describe the role of the accessory pigments in photosynthesis.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: ATP synthase is located at C

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