- A Mitochondrial matrix
- B Inner mitochondrial membrane
- C Outer mitochondrial membrane
- D Cytoplasm
Correct answer: B. Inner mitochondrial membrane
Explanation: The ETC is located in the inner mitochondrial membrane, where most ATP is generated via oxidative phosphorylation.
Concept context
Glycolysis, the Krebs cycle, the electron transport chain, fermentation, and the respiratory quotient. The cellular energy-release counterpart to photosynthesis.