Question

How many ATP and NADPH₂ are required for the synthesis of one molecule of Glucose during Calvin cycle.

Options

• 18 ATP and 12 NADPH₂

• 12 ATP and 16 NADPH₂

• 18 ATP and 16 NADPH₂

• 12 ATP and 12 NADPH₂

Answer 1

18 ATP and 12 NADPH₂

Explanation:

The Calvin cycle is a set of chemical reactions carried out by plants to reduce CO₂ and other compounds to form glucose. Six turns of the Calvin cycle result in the formation of one molecule of glucose. For one turn, 3 ATP molecules and 2 NADPH₂ molecules are required. Thus, for six turns of the Calvin Cycle, 6 * 3 = 18 molecules of ATP and 6 * 2 = 12 molecules of NADPH₂ are required. Hence, 18 ATP and 12 NADPH₂ are required to synthesize one glucose molecule during the Calvin cycle.