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Protein plays less of a role in energy production during exercise than either carbohydrates or fats; however, it is possible to metabolize some protein during exercise. Which of the following are considered the “building blocks” of proteins?
  1. Calcium and sodium
  2. Amino acids
  3. Triglycerides
  4. Lipids
Explanation
Answer: B - During exercise, protein synthesis is suppressed and this change leaves certain amino acids available for catabolic processes. Skeletal muscle is able to metabolize certain amino acids to help produce adenosine tri phosphate (ATP), a chemical compound required for cellular function. These amino acids are the byproduct of protein metabolism.
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