[Campbell Biology P.951] What is the primary cause of muscle shrinkage and protein deficienc... | Practice Question

What is the primary cause of muscle shrinkage and protein deficiency in the brain during undernourishment, as described in the text?

  • A: Excessive carbohydrate intake.
  • B: The body breaking down its own proteins for fuel.
  • C: Increased fat storage.
  • D: Impaired absorption of vitamins.

Explanation

The text states: 'The body first uses up stored carbohydrates and fat. It then begins breaking down its own proteins for fuel: Muscles shrink, and the brain may become protein-deficient.'