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Question: Answered & Verified by Expert
In the Calvin cycle for the fixation of 5 molecules of CO2, how many ATP and NADPH are required in the reduction step?
BiologyPhotosynthesis in Higher PlantsNEET
Options:
  • A 18 ATP and 12 NADPH
  • B 15 ATP and 10 NADPH
  • C 10 ATP and 10 NADPH
  • D 3 ATP and 2 NADPH
Solution:
1011 Upvotes Verified Answer
The correct answer is: 10 ATP and 10 NADPH
During the Calvin cycle, for fixing one molecule of CO2, 2 ATP and 2 NADPH are required in the reduction step. Hence, for the fixation of 5 molecules of CO2, 10 ATP, and 10 NADPH are required in the reduction step.

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