NEET (UG) 2023 — Question 83

For every $\mathrm{CO}_2$ molecule entering the Calvin cycle, 3 molecules of ATP and 2

of $\mathrm{NADPH}_2$ are required. To make one molecule of glucose, 6 turns of the cycle are

required. Thus, ATP and NADPH2 molecules required for synthesis of one molecule of glucose

during Calvin cycle will be

$\rightarrow 6 \times\left[\begin{array}{l}3 \mathrm{ATP} \\ 2 \mathrm{NADPH} \mathrm{H}_2\end{array}\right]=\begin{aligned} & 18 \mathrm{ATP} \text { and } \\ & 12 \mathrm{NADPH}_2\end{aligned}$