The production of glyceraldehyde-3-phosphate (G3P) in the Calvin cycle requires 6 molecules each of ATP and NADPH. Another 3 molecules of ATP are then used in the cycle. What is the purpose of the 3 additional ATP molecules? A) To regenerate the starter molecule RuBP. B) To attract the next CO₂ molecule to enter the Calvin cycle. C) To reduce the molecules of G3P to form glucose. D) To join acetyl CoA into pyruvate, preparing it to enter the citric acid cycle. E) To fix carbon dioxide to RuBP.

Question

Quizplus · Accepted Answer

The final 3 molecules of ATP are necessary to reform the starter molecule of RuBP, so the Calvin cycle can continue.

The Production of Glyceraldehyde-3-Phosphate (G3P) in the Calvin Cycle Requires