What is the function of molecular oxygen in cellular respiration?
Correct answer: D. To combine with hydrogen from organic molecules to produce water
- A. To cause the breakdown of citric acid
- B. To combine with glucose to produce carbon dioxide
- C. To combine with carbon from organic molecules to produce carbon dioxide
- D. To combine with hydrogen from organic molecules to produce water
Explanation
Function of molecular oxygen in cellular respiration is to combine with hydrogen from organic molecules to produce water.
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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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