Multiple Choice
Which of the following statements correctly describes the relationship between the light reactions and the Calvin cycle?
9. Photosynthesis
Review of Photosynthesis
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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.
Verified step by step guidance1
Understand the role of NADP+ in photosynthesis: NADP+ is a coenzyme that plays a crucial role in the light-dependent reactions of photosynthesis.
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.
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.
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.
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.
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