During heavy exercise, the ATP requirements of active muscle are likely to be met by metabolism of
A) protein.
B) fatty acids.
C) carbohydrates.
D) nucleotides.

Question

Quizplus · Accepted Answer

Carbohydrates are the primary source of ATP during heavy exercise as they can be metabolized quickly to provide energy for the muscles. Fatty acids are a slower source of energy and are more important for prolonged exercise. Protein and nucleotides are not efficient sources of energy during exercise.

During Heavy Exercise, the ATP Requirements of Active Muscle Are