Pick up the correct flow of electrons in second electron transport chain of non-cyclic photophosphorylation:
Correct answer: D. PS-I → Primary acceptor of PS-I → Fd → NADP
- A. NADP → Primary electron acceptor of PS-I → NADP → PS-I
- B. PS-I → Fd → Primary acceptor of PS-I → NADP
- C. PS-I → Primary acceptor of PS-I → NADP → Fd
- D. PS-I → Primary acceptor of PS-I → Fd → NADP
Explanation
It starts from PS-I and ends at formation of reducing power.
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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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