Question

Synthesis of one molecule of glucose requires

• A. $6C{O}_2$, 18 ATP and 12 NADPH
• B. $6C{O}_2$, 12 ATP and 18 NADPH
• C. $6C{O}_2$, 30 ATP and 12 NADPH
• D. $6C{O}_2$, 38 ATP and 12 NADPH

Answer 1

The correct option is A $6C{O}_2$, 18 ATP and 12 NADPH

During Calvin cycle, for every carbon dioxide molecule that enters the pathway, 3 molecules of ATP and 2 NADPH are required.
To make one molecule of glucose, 6 carbon dioxide molecule need to enter the cycle.
Thus, 6 $C{O}_2$, 18 ATP and 12 NADPH molecules will be required to make one molecule of glucose through Calvin cycle.