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2 marksPhotosynthesis and ATP Synthesis

CAPE Biology Unit 2 · 2007 · Paper 2 · Question 1(b)(i)

Figure 2 displays the rate of photosynthesis measured by oxygen volume per unit time at varying light intensities and carbon dioxide concentrations (0.03% and 0.13%).

Explain the shape of Curve A.

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Other parts of this question

  1. 1(a)Explain how the apparatus in Figure 1 can be used to measure the rate of photosynthesis.[5 marks]
  2. 1(b)(ii)Compare Curves A and B and account for the observed differences.[2 marks]
  3. 1(b)(iii)Suggest a possible hypothesis for this experiment.[1 mark]

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