Describe the significance of NADPH and ATP formation during the light-dependent reactions for the Calvin cycle.

• A. NADPH and ATP are directly involved in glucose synthesis during the Calvin cycle.
• B. NADPH and ATP provide the energy and reducing power needed for carbon fixation in the Calvin cycle.
• C. NADPH and ATP are used to split water molecules in the Calvin cycle.
• D. NADPH and ATP are used to produce oxygen in the Calvin cycle.

Answer: (B)