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The textbook total ATP yield per glucose under aerobic conditions is approximately

A2 ATP
B36 ATP
C120 ATP
D0 ATP
Answer & Solution
Correct answer: B. 36 ATP
Adding glycolysis (2), link + Krebs (2 ATP/GTP), and ~32 ATP from oxidative phosphorylation (each NADH ≈ 3 ATP, each FADH₂ ≈ 2 ATP) gives the textbook ~36 ATP per glucose. The 2-ATP figure is for anaerobic respiration only.
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