Fuel used by cells in cellular respiration to get energy is ________ ?

Correct answer: C. Glucose

  • A. polysaccharides
  • B. Polypeptides
  • C. Glucose
  • D. Sugar

Explanation

Glucose is the usual respiratory substrate because its oxidation in cellular respiration releases energy that is captured as ATP. Students may choose sugar, but sugar is a broad term and may include many carbohydrates, whereas glucose is the specific molecule normally meant here.

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