Which process DOES NOT occurs during Calvin cycle?*1 pointRegeneration of CO2 acceptorOxidation of NADPHRelease of oxygenUse ATP

Break Down the Problem

1. Identify the processes that occur during the Calvin cycle.
2. Determine which option does not belong to those processes.

Relevant Concepts

• The Calvin cycle is a series of biochemical reactions that take place in the stroma of chloroplasts during photosynthesis.
• Key processes in the Calvin cycle include:
  • Carbon fixation
  • Reduction phase (where NADPH and ATP are used)
  • Regeneration of ribulose bisphosphate (RuBP), the CO2 acceptor

Analysis and Detail

1. Regeneration of CO2 acceptor: This is a core process where ribulose bisphosphate is regenerated to accept CO2.
2. Oxidation of NADPH: During the Calvin cycle, NADPH is utilized but not oxidized in the conventional sense; it is used to convert 3PG to G3P.
3. Release of oxygen: Oxygen is released during the light-dependent reactions of photosynthesis, not during the Calvin cycle.
4. Use of ATP: ATP is consumed in the Calvin cycle to facilitate various reactions, especially in the reduction phase and regeneration of the carbon skeleton.

Verify and Summarize

• Based on the analysis, the process that does not occur during the Calvin cycle is the Release of oxygen.

Final Answer

The process that does not occur during the Calvin cycle is Release of oxygen.