MDCAT Chemistry MCQ #541

Which process is responsible for the rapid energy production in muscle cells during intense exercise?

MDCAT Chemistry MCQ #541

  1. Question 1

    Q1. Which process is responsible for the rapid energy production in muscle cells during intense exercise?

    • A) Glycolysis in the absence of oxygen to produce 2 ATP
    • B) Oxidative phosphorylation in the mitochondria to produce 36 ATP
    • C) Phosphagen system, involving the rapid breakdown of phosphocreatine to ATP
    • D) Fermentation with lactic acid dehydrogenase to produce 2 ATP

    Answer: Phosphagen system, involving the rapid breakdown of phosphocreatine to ATP

    Explanation: The phosphagen system is responsible for rapid energy production in muscle cells during intense exercise. It fails because glycolysis in the absence of oxygen is too slow and inefficient.