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1 markPhotosynthesis and ATP Synthesis

CAPE Biology Unit 2 · 2004 · Paper 2 · Question 1(f)

Suggest why carbon gain does not double as CO2 concentration doubles.

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Other parts of this question

  1. 1(a)Explain why daily carbon gain in Shorea leprosula is higher in uniform sunlight than in flecked sunlight.[2 marks]
  2. 1(b)(i)Determine the difference in daily carbon gain in Shorea leprosula grown in flecked sunshine and uniform sunshine at 350 units of carbon dioxide.[1 mark]
  3. 1(b)(ii)Determine the difference in daily carbon gain in Shorea leprosula grown in flecked sunshine and uniform sunshine at 700 units of carbon dioxide.[1 mark]
  4. 1(c)(i)Determine the average, MAXIMUM photosynthetic rate of Shorea leprosula at elevated carbon dioxide concentration (700 units).[1 mark]
  5. 1(c)(ii)Determine the average, MAXIMUM photosynthetic rate of Shorea leprosula at ambient carbon dioxide concentration.[1 mark]
  6. 1(d)Calculate the difference in photosynthetic rate between the elevated and ambient carbon dioxide concentrations in (c)(i) and (ii).[1 mark]
  7. 1(e)Explain why the daily carbon gain in Shorea leprosula is higher at 700 units of CO2 than at 350 units of CO2.[2 marks]

More practice: the rest of this paper · more Photosynthesis and ATP Synthesis questions · all CAPE Biology Unit 2 past papers