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

Photosynthesis as an energy transfer process — practice question

(a)[7]

Explain how the leaf physiology of a C4 plant, such as maize, is adapted so that carbon fixation remains efficient at high temperatures.

(b)[8]

Describe how, in photosynthesis, light energy is changed into chemical energy in the form of ATP.

Worked solution & mark scheme

This 15-mark question has a full step-by-step worked solution and mark scheme. One marking point: “In C$_3$ plants at high temperature Rubisco binds $O_2$” …

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