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

Photosynthesis as an energy transfer process — practice question

Fig. 1.1 presents a transmission electron micrograph of a section of a chloroplast.
(a)[4]

Table 1.1 lists several functions that take place in different regions of a chloroplast. Complete Table 1.1 by naming the letter on Fig. 1.1 that shows a location fitting each description. A letter may be used once, more than once, or not used at all.

(b(i))[4]

Describe how chromatography could be used to separate and identify the coloured pigments in the liquid extract of C.

(b(ii))[3]

Explain why membrane C contains several differently coloured pigments so it can operate efficiently.

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This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: builds up a high proton concentration

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