Anaerobic glycolysis produces two lactic acid molecules per glucose

Steps:

• Glucose breaks down in glycolysis to two pyruvate molecules under anaerobic conditions.
• Each pyruvate converts to one lactic acid molecule via lactate dehydrogenase.
• Thus, one glucose yields two lactic acid molecules.
• For two glucose molecules, multiply: 2 × 2 = 4 lactic acid molecules.

Why B is correct:

• Lactic acid fermentation equation: C6H12O6 → 2 CH3CH(OH)COOH, yielding two lactic acid per glucose.

Why the others are wrong:

• A: Assumes one lactic acid per glucose, ignoring pyruvate splitting.
• C: Overestimates; confuses with ATP yield or other pathways.
• D: Far too high; mixes with aerobic respiration products like CO2.

Final answer: B