Oxygen is used in which step of aerobic respiration:
Correct answer: D. Respiratory chain
- A. Glycolysis
- B. Pyruvic acid oxidation
- C. Krebs cycle
- D. Respiratory chain
Explanation
The respiratory chain, or electron transport chain (ETC), is located in the inner mitochondrial membrane. It is the only stage in aerobic respiration where oxygen is directly used as the final electron acceptor, forming 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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Which molecule is common to both glycolysis and the Calvin cycle?
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Both glucose and appropriate enzymes are necessary for the process of glycolysis to begin. Which additional compound must also be present?
Which one of the following molecules of the respiratory chain is found at the lowest energy level?
Which of the following is the correct sequence of the electron transport chain?
Glycolysis is the breakdown of glucose into molecules of: