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Complete oxidation of glucose in aerobic respiration can yield a net output of _____ATP.

  • A.40
  • B.6
  • C.38
  • D.2

Answer: C

Correct answer: 38

Complete aerobic oxidation yields about 38 ATP in the classical accounting: 4 from substrate-level phosphorylation, and the rest from reoxidising 10 NADH and 2 FADH2 through the electron transport chain. Modern measurements put the real figure nearer 30, because the proton gradient also pays for transport across the membrane.

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