Cooperation of the two photosystems of the chloroplast is required for?
Correct answer: B. Reduction of NADP
- A. ATP sysnthesis
- B. Reduction of NADP
- C. Cyclic photophosphorylation
- D. Oxidation of the reaction center of photosystem
Explanation
The cooperation of two photosystems of the chloroplast is required for the reduction of NADP+ to NADPH, which is an important step in the light-dependent reactions of photosynthesis. The light energy absorbed by the photosystems is used to generate ATP and NADPH, which are used in the subsequent light-independent reactions to produce glucose. The NADPH produced by the photosystems is used as a reducing agent in the Calvin cycle, which produces glucose from carbon dioxide.
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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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