Synthesis of one molecule of glucose requires

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(A) In the Calvin cycle,for every molecule of carbon dioxide $(CO_{2})$ fixed,$3$ molecules of $ATP$ and $2$ molecules of $NADPH$ are required.Since o

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$6 CO_{2}, 18 ATP$ and $12 NADPH$

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(A) In the Calvin cycle,for every molecule of carbon dioxide $(CO_{2})$ fixed,$3$ molecules of $ATP$ and $2$ molecules of $NADPH$ are required.Since one molecule of glucose $(C_{6}H_{12}O_{6})$ contains $6$ carbon atoms,the cycle must turn $6$ times to synthesize one molecule of glucose.Therefore,the total requirement is: $6 	imes 3 ATP = 18 ATP$ and $6 	imes 2 NADPH = 12 NADPH$.Thus,the synthesis of one molecule of glucose requires $6 CO_{2}, 18 ATP$,and $12 NADPH$.

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