- A Lactic acid
- B Ethanol and CO2
- C Citric acid
- D Acetyl CoA
Correct answer: B. Ethanol and CO2
Explanation: In alcoholic fermentation, yeast converts pyruvate into ethanol and CO2 under anaerobic conditions, regenerating NAD+ for glycolysis to continue.
Concept context
Glycolysis, the Krebs cycle, the electron transport chain, fermentation, and the respiratory quotient. The cellular energy-release counterpart to photosynthesis.