What is the role of NADP⁺ in photosynthesis?

• A. It assists chlorophyll in capturing light.
• B. It acts as the primary electron acceptor for the photosystems.
• C. As part of the electron transport chain, it manufactures ATP.
• D. As a component of photosystem II, it catalyzes the hydrolysis of water.
• E. It is reduced and then carries electrons to the Calvin cycle.

Answer: (E)

Verified step by step guidance

1. Understand the role of NADP+ in photosynthesis: NADP+ is a coenzyme that plays a crucial role in the light-dependent reactions of photosynthesis.
2. Recognize that NADP+ acts as an electron carrier: During the light-dependent reactions, NADP+ accepts electrons that are transferred from water molecules through the electron transport chain.
3. Learn about the reduction of NADP+: NADP+ is reduced to NADPH by gaining electrons and a hydrogen ion (H+). This process occurs in the thylakoid membrane of the chloroplast.
4. Identify the function of NADPH: Once reduced, NADPH carries the high-energy electrons to the Calvin cycle, where it is used to help convert carbon dioxide into glucose.
5. Connect NADP+ to the overall process: NADP+ is essential for the transfer of energy and electrons from the light-dependent reactions to the Calvin cycle, facilitating the synthesis of carbohydrates in plants.