During anaerobic respiration the final electron acceptor in electron transport chain is:
Correct answer: D. Sulfate
- A. Molecular oxygen
- B. NADP+
- C. water
- D. Sulfate
Explanation
In anaerobic respiration, an inorganic substance other than oxygen accepts electrons at the end of the electron transport chain; sulfate can serve as this terminal electron acceptor in sulfate-reducing organisms. Molecular oxygen is the terminal acceptor in aerobic respiration, so it is the likely alternative students choose.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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