NADP+ reductase transfers electrons from:
Correct answer: A. Ferredoxin
- A. Ferredoxin
- B. Photosystem II
- C. Plastoquinone
- D. Cytochrome b6f
Explanation
NADP⁺ reductase specifically accepts electrons from ferredoxin, the last carrier in Photosystem I's linear electron transport chain. Other components like P680, plastoquinone, and cytochrome b6f are part of earlier stages of the chain and are indirectly involved in producing the reducing power for NADPH, but they do not directly transfer electrons to NADP⁺. This final transfer is essential for carbon fixation and sustaining life on Earth.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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