- A 2 ATP
- B 4 ATP
- C 36-38 ATP
- D 100 ATP
Correct answer: C. 36-38 ATP
Explanation: Complete aerobic respiration (glycolysis + Krebs cycle + ETC) yields approximately 36-38 ATP per glucose, far more than glycolysis alone (2 ATP).
Concept context
Glycolysis, the Krebs cycle, the electron transport chain, fermentation, and the respiratory quotient. The cellular energy-release counterpart to photosynthesis.