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3 marksPhotosynthesis and ATP Synthesis

CAPE Biology Unit 2 · 2018 · Paper 2 · Question 1(b)(ii)

Photosynthetic rate is measured at varying light levels for individual leaves, with values shown in Table 1.

Using the concept of limiting factors, suggest THREE reasons for the shape of the graph drawn in b (i).

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Other parts of this question

  1. 1(a)(i)Writing your answer in Figure 1, insert the number of carbon atoms contained in EACH of the compounds labelled B to G (example provided for Compound A).[3 marks]
  2. 1(a)(ii)Writing your answer in Figure 1, insert the input and product at the point numbered 4, as completed for points 1, 2, 3 and 5.[1 mark]
  3. 1(a)(iii)Explain the TWO MAIN roles of the Krebs cycle.[4 marks]
  4. 1(b)(i)On the grid provided on page 7, plot a line graph based on the data provided in Table 1.[4 marks]

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