NEET · BiologyMedium
How many molecules of ATP and NADPH are required respectively to fix one molecule of carbon dioxide into glucose via the Calvin cycle?
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: B —
Solution
- The Calvin cycle consists of carboxylation, reduction, and regeneration phases.
- Reduction of 3-phosphoglycerate to triose phosphate consumes 1 ATP and 1 NADPH per molecule.
- Regeneration of Ribulose 1,5-bisphosphate consumes an additional 1 ATP.
- Total requirement per is 3 ATP and 2 NADPH.
- Hence the answer is (B).
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