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How many molecules of atp are needed for each "turn" of the calvin cycle

2 Answers

11 votes

9 molecules

*EXPLANATION*

the calvin cycle: three molecules of CO² fixed give a net yield of one molecule of glyceraldehyde 3-phosphat at the net cost of nine molecules of ATP and six molecules of NADPH

User David Crow
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10 votes

Answer:

3 ATP

Step-by-step explanation:

Each turn of the Calvin cycle also uses up 3 ATP and 2 NADPH in the processes of reducing (adding electrons to) 3-phosphoglyceric acid to produce glyceraldehyde-3 phosphate, and regenerating RuBP so that they can accept a new atom of carbon from CO2 from the air.

User Rab Ross
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