What happens during the light-independent reactions (Calvin cycle) of photosynthesis?

Answer and explanation

Correct answer: D. Carbon dioxide is fixed into organic triose phosphate carbohydrates using ATP and NADPH in the stroma

  1. Step 1: The Calvin cycle occurs in the stroma of chloroplasts. Step 2. Enzyme RuBisCO fixes CO2 with RuBP, using ATP and NADPH generated in the light reactions to produce glucose precursors. Answer: Carbon dioxide is fixed into organic triose phosphate carbohydrates using ATP and NADPH in the stroma. Why not the others: Photolysis of water occurs in the light-dependent reactions.

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