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      Question

      Muscle fatigue is due to the accumulation

      of
      A cholesterol Correct Answer Incorrect Answer
      B lactic acid Correct Answer Incorrect Answer
      C lipoic acid Correct Answer Incorrect Answer
      D triglycerides Correct Answer Incorrect Answer

      Solution

      Lactic acid accumulates during anaerobic respiration in muscles when oxygen supply is insufficient, leading to muscle fatigue. Information Booster:

      1. Anaerobic respiration occurs during intense exercise.
      2. Lactic acid lowers pH, causing pain and fatigue.
      3. Oxygen debt is required to metabolize lactic acid.

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