Pepsin is an enzyme found in the human stomach that breaks down protein. Pepsin will not break down starch. Which statement best explains this observation? A. Starches are too large to be affected by enzymes.
B. Enzymes only work for specific substrates.
C. Enzymes are denatured in the presence of carbohydrates.
D. Enzymes are carbohydrates, so they can’t act on other carbohydrates like starches.