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BotanyNEET 2024Calvin cycle, C4 pathway, photorespiration

Photosynthesis in Higher Plants

How many molecules of ATP and NADPH are required for every molecule of fixed in the Calvin cycle?

  1. A.2 molecules of ATP and 2 molecules of NADPH
  2. B.3 molecules of ATP and 3 molecules of NADPH
  3. C.3 molecules of ATP and 2 molecules of NADPH✓
  4. D.2 molecules of ATP and 3 molecules of NADPH

Solution

Each fixed in the Calvin cycle costs 3 ATP and 2 NADPH — 18 ATP and 12 NADPH per hexose.

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