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1.4 Photosynthesis

1.4 Photosynthesis

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Question 7

Which statement correctly explains how a specific structural feature of the chloroplast is adapted for its role in photosynthesis?

A

The thylakoid membranes provide a large surface area for the attachment of photosystems, electron carriers, and ATP synthase enzymes involved in the light-dependent stage.

B

The stroma contains a high concentration of photosynthetic pigments, such as chlorophyll, to absorb the light energy required for the light-independent stage.

C

The double outer membrane is folded into numerous cristae to increase the surface-area-to-volume ratio for the rapid active transport of glucose out of the chloroplast.

D

The thylakoid lumen maintains a highly alkaline pH in order to provide the optimum environment for the enzymes, such as RuBisCO, that catalyze carbon fixation.

Markscheme

1.4 Photosynthesis Questions

  1. GCSE
  2. /Biology
  3. /1.4 Photosynthesis

12 exam-style questions on OCR GCSE Biology 1.4 Photosynthesis, covering 1.4.1 Photosynthesisers as biomass producers, 1.4.2 Factors affecting the rate of photosynthesis, and 1.4.3 Limiting factors in photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.

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