MDCAT Biology MCQ #259

During a heavy sprint, human muscle cells undergo anaerobic respiration. What is the primary purpose of converting pyruvate to lactate?

MDCAT Biology MCQ #259

  1. Question 1

    Q1. During a heavy sprint, human muscle cells undergo anaerobic respiration. What is the primary purpose of converting pyruvate to lactate?

    • A) Produce CO2
    • B) Produce ATP
    • C) Regenerate NAD+
    • D) Regenerate RuBP

    Answer: Regenerate NAD+

    Explanation: Lactic acid fermentation oxidizes NADH back to NAD+. This allows glycolysis to continue producing ATP in the absence of oxygen.