Question

Sol. [Key Concept: Calvin cycle needs 18 ATP + 12 NADPH per glucose]

Each turn of Calvin pathway utilizes 3ATP and $NADPH + H^{+}$molecules for fixation of $1{CO}_{2}$ molecule.

So for 1 Glucose 6 turns are required, hence 18 ATP and 12 NADPH $+ H^{+}$are required for glucose synthesis.