High School

Which of the following processes occurs during the second phase, the reduction phase, of the Calvin cycle?

- Carbon fixation
- ATP production
- RuBP (ribulose bisphosphate) regeneration
- NADPH production
- Molecular oxygen production
- G3P production

Answer :

Final answer:

During the reduction phase of the Calvin cycle, ATP and NADPH are produced, and glyceraldehyde 3-phosphate (G3P) is produced from 3-phosphoglycerate (3-PGA).

Explanation:

During the second phase, the reduction phase, of the Calvin cycle, the following processes occur:

  1. ATP production: Six molecules of ATP are used to convert 3-phosphoglycerate (3-PGA) into glyceraldehyde 3-phosphate (G3P).
  2. NADPH production: Six molecules of NADPH (from the light-dependent reactions) are used to convert 3-PGA into G3P.
  3. G3P production: The reduction of 3-PGA using ATP and NADPH results in the production of G3P, which can be used to synthesize glucose.