MDCAT Biology MCQ #304

Yeast cells undergoing anaerobic respiration produce ethanol and a specific gas. Which gas is released during this alcoholic fermentation process?

MDCAT Biology MCQ #304

  1. Question 1

    Q1. Yeast cells undergoing anaerobic respiration produce ethanol and a specific gas. Which gas is released during this alcoholic fermentation process?

    • A) Oxygen
    • B) Carbon dioxide
    • C) Nitrogen
    • D) Hydrogen

    Answer: Carbon dioxide

    Explanation: Yeast fermentation involves decarboxylation of pyruvate, releasing CO2. Oxygen is consumed in aerobic respiration, not produced in fermentation.