MDCAT Biology MCQ #444

In a yeast culture undergoing anaerobic respiration, which characteristic distinguishes its fermentation pathway from that occurring in overworked human skeletal muscles?

MDCAT Biology MCQ #444

  1. Question 1

    Q1. In a yeast culture undergoing anaerobic respiration, which characteristic distinguishes its fermentation pathway from that occurring in overworked human skeletal muscles?

    • A) The net gain of two ATP molecules per glucose
    • B) The regeneration of NAD+ from NADH in the cytoplasm
    • C) The release of carbon dioxide as a metabolic byproduct
    • D) The requirement of pyruvate as the primary substrate

    Answer: The release of carbon dioxide as a metabolic byproduct

    Explanation: Alcoholic fermentation produces carbon dioxide and ethanol, while lactic acid fermentation produces only lactate without any gas release.