During the light reaction of photosynthesis, which of the following phenomena are observed during cyclic phosphorylation as well as noncyclic phosphorylation?
Correct answer: A. Production of ATP
- A. Production of ATP
- B. Photolysis
- C. Formation of NADPH
- D. Excitation of electrons by light
Explanation
During the light reactions of photosynthesis, excitation of electrons by light and production of ATP occur in both cyclic and non-cyclic phosphorylation. Splitting of water and formation of NADPH occur only in non-cyclic phosphorylation. Cyclic phosphorylation recycles electrons within photosystem I and does not produce NADPH or oxygen.
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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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