Which of the following statements is/are INCORRECT regarding energy metabolism in muscle…

Biology · NEET · NTA ExamsStructural Organisation in Animals

Which of the following statements is/are INCORRECT regarding energy metabolism in muscle fibres?

I. Red fibres have a high concentration of myoglobin to facilitate anaerobic respiration.
II. White fibres contain abundant mitochondria and are highly resistant to fatigue.
III. During sustained aerobic exercise, red fibres primarily use fatty acids as a fuel source.
IV. The accumulation of lactic acid in muscles is associated with anaerobic glycolysis in white fibres.
V. The sarcoplasmic reticulum is more developed in red fibres to support rapid calcium release.

Choose the correct answer from the options given below:

  1. II, III and IV only
  2. I, III and V only
  3. I, II and V only
  4. III, IV and V only

Answer

(C) I, II and V only

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