Multiple choice

Which of the following is regarded as main cellular fuel?

  1. Protein

  2. Fat

  3. Fructose

  4. Glucose

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 Glucose is regarded as main cellular fuel.It is used as an energy source in most organisms, from bacteria to humans, through either aerobic respiration, anaerobic respiration, or fermentation.