Answer :
Final answer:
The reduction stage of the Calvin cycle involves the conversion of 3-PGA to G3P with the help of ATP and NADPH. It is a reduction reaction because it involves the gain of electrons by 3-PGA.
Explanation:
The subject of this question is Biology, specifically related to the Calvin cycle, a series of reactions that occur during photosynthesis.
The reduction stage, which is the second step of the Calvin cycle, involves the conversion of 3-PGA (3-phosphoglycerate) to glyceraldehyde 3-phosphate (G3P) with the help of ATP and NADPH. This reaction is a reduction because it involves the gain of electrons by 3-PGA. The ATP and NADPH molecules are regenerated to be used again in the light-dependent reactions.
So, the correct answer is b) Reduction of 3-PGA to G3P and Regeneration of RuBP.
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