Which of the following molecules is reduced by accepting hydrogen in the Calvin cycle?
Correct answer: D. 1,3-Bisphosphoglycerate
- A. Glyceraldehyde-3-phosphate
- B. 3-Phosphoglycerate
- C. Ribulose bisphosphate
- D. 1,3-Bisphosphoglycerate
Explanation
1,3-Bisphosphoglycerate (1,3-BPG) is a high-energy intermediate in glycolysis, a central metabolic pathway that breaks down glucose to produce energy. It is formed during the energy-yielding steps of glycolysis and is later converted into another high-energy intermediate, ATP.
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About Bioenergetics
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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