In the Calvin cycle, the reducing power from NADPH is used during:
Correct answer: B. Conversion of 1, 3- Bisphosphoglycerate to Glyceraldehyde 3- phosphate
- A. Formation of 1, 3- Bisphosphoglycerate
- B. Conversion of 1, 3- Bisphosphoglycerate to Glyceraldehyde 3- phosphate
- C. Formation of fructose 1, 6- bisphosphate from 1, 3- bisphosphoglycerate
- D. Formation of glucose from fructose bisphosphate
Explanation
In the Calvin Cycle, the reducing power from NADPH is used during the reduction phase of the cycle. The Calvin Cycle, also known as the light-independent reactions of photosynthesis, takes place in the stroma of chloroplasts and is responsible for the synthesis of carbohydrates, primarily glucose. During the Calvin Cycle, the reducing power in the form of NADPH, which was generated during the light-dependent reactions (photophosphorylation), is utilized to reduce 3-phosphoglycerate (3-PGA) to glyceraldehyde-3-phosphate (G3P). This reduction phase involves a series of enzyme-catalyzed reactions, and the NADPH donates electrons to convert 3-PGA into G3P.
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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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