MDCAT Biology MCQ #5626

During strenuous exercise, which energy source is primarily used by muscles?

MDCAT Biology MCQ #5626

  1. Question 1

    Q1. During strenuous exercise, which energy source is primarily used by muscles?

    • A) Glucose
    • B) Fatty acids
    • C) Amino acids
    • D) Lactic acid

    Answer: Glucose

    Explanation: Glucose is the primary energy source during strenuous exercise; it's broken down anaerobically to produce ATP quickly.