MDCAT Biology MCQ #249

A baker uses yeast to make bread dough rise. This process is a result of CO2 release during the production of which substance?

MDCAT Biology MCQ #249

  1. Question 1

    Q1. A baker uses yeast to make bread dough rise. This process is a result of CO2 release during the production of which substance?

    • A) Lactic acid
    • B) Pyruvic acid
    • C) Citric acid
    • D) Ethyl alcohol

    Answer: Ethyl alcohol

    Explanation: Yeast fermentation produces ethanol and CO2. Lactic acid fermentation occurs in muscles and does not produce CO2 as a byproduct.