Answer :

Final answer:

During the regeneration phase of the Calvin Cycle, ribulose bisphosphate (RuBP) is produced. This regeneration allows the cycle to continue by replenishing RuBP, which is necessary for carbon fixation. Hence, RuBP is the key compound that is regenerated during this phase.


Explanation:

Regeneration in the Calvin Cycle

The process of regeneration occurs in the Calvin Cycle, which is part of photosynthesis. During this phase, the compounds produced as a result of carbon fixation and reduction are converted back into ribulose bisphosphate (RuBP), allowing the cycle to continue.

Key Compounds in the Calvin Cycle

  • PGA (3-phosphoglycerate): This is an intermediate compound formed immediately after carbon fixation.
  • G3P (glyceraldehyde-3-phosphate): Produced during the reduction phase, G3P can be converted into glucose and other carbohydrates.
  • RuBP: This is the compound that is regenerated during the regeneration phase, which is essential for starting the cycle anew.

In summary, during the regeneration phase of the Calvin Cycle, the primary compound that is regenerated is RuBP, enabling the cycle to continue the process of photosynthesis.


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