NASM Certified Sports Nutrition Coach Practice Test 2026 - Complete Exam Prep

Proteases are the enzymes responsible for breaking down proteins in the stomach. These enzymes catalyze the hydrolysis of peptide bonds within protein molecules, resulting in smaller peptides and amino acids that can be absorbed and utilized by the body.

Specifically in the stomach, enzymes like pepsin are active in an acidic environment and play a crucial role in the initial phase of protein digestion. This process is essential for nutrient absorption and for preparing proteins for further digestion in the small intestine.

Carbohydrases, on the other hand, are enzymes that break down carbohydrates, while lipases target fats. Nucleases are responsible for breaking down nucleic acids. Each of these enzyme types has a specific function in digestion, highlighting the specialization necessary for efficient nutrient processing in the body.