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What serves as the terminal electron acceptor in aerobic respiration ?

  • A.Nitrate
  • B.Sulphate
  • C.Oxygen
  • D.Pyruvate

Answer: D

Correct answer: Oxygen

Oxygen accepts the electrons at the end of the chain and is reduced to water. Anaerobic respiration substitutes another inorganic acceptor such as nitrate or sulphate, and because these have lower reduction potentials they yield less energy.

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