The most common respiratory substrate as an energy source is:
Correct answer: A. Glucose
- A. Glucose
- B. Sucrose
- C. Fructose
- D. Insulin
Explanation
The most common respiratory substrate (a substance that undergoes oxidation in cellular respiration to produce energy) is glucose. Glucose is a simple sugar and is a primary source of energy for many organisms. In cellular respiration, glucose is oxidized to produce carbon dioxide, water, and energy in the form of adenosine triphosphate (ATP).
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