- A Cytoplasm
- B Nucleus
- C Mitochondrial matrix
- D Inner mitochondrial membrane
Correct answer: A. Cytoplasm
Explanation: Glycolysis occurs in the cytoplasm (cytosol), breaking down glucose into two molecules of pyruvate before further oxidation in the mitochondria.
Concept context
Glycolysis, the Krebs cycle, the electron transport chain, fermentation, and the respiratory quotient. The cellular energy-release counterpart to photosynthesis.