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JIPMER2017BotanyPhotosynthesis in Higher Plants

Fixation of one CO ₂ molecule through Calvin cycle requires.

Options

  1. A1 ATP and 2 NADPH ₂
  2. B2 ATP and 2 NADPH ₂
  3. C3 ATP and 2 NADH ₂
  4. D2 ATP and 1NADPH ₂

Correct answer

C. 3 ATP and 2 NADH ₂

Step-by-step solution

2 ATP are required during conversion of PGA to 1, 3 diphosphoglyceric acid and 1 ATP during conversioin of glyceraldehyde phosphate to ribulose biphosphate. 2 NADPH ₂ molecules are utilised for converting 1, 3 diphosphoglyceric acid to glyceraldehyde phosphate.

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