Which option correctly matches an enzyme with its substrate among digestive enzymes?

Which option correctly matches an enzyme with its substrate among digestive enzymes?

• A. Amylase digests starch; Proteases digest proteins; Lipases digest fats.
• B. Amylase digests fats; Proteases digest starch; Lipases digest proteins.
• C. Amylase digests proteins; Proteases digest fats; Lipases digest starch.
• D. Amylase digests nucleic acids; Proteases digest carbohydrates; Lipases digest proteins.

Answer: (B)

Enzymes are highly specific for their substrates, especially in digestion. Amylase targets carbohydrates, specifically starch, breaking it down into smaller sugars. Proteases target proteins, cutting them into peptides and amino acids. Lipases target fats, hydrolyzing triglycerides into fatty acids and glycerol. The correct matching reflects these true roles: amylase with starch, proteases with proteins, and lipases with fats. The option described as matching fats, starch, and proteins to the wrong enzymes would not reflect how digestion actually works.

Enzymes are highly specific for their substrates, especially in digestion. Amylase targets carbohydrates, specifically starch, breaking it down into smaller sugars. Proteases target proteins, cutting them into peptides and amino acids. Lipases target fats, hydrolyzing triglycerides into fatty acids and glycerol. The correct matching reflects these true roles: amylase with starch, proteases with proteins, and lipases with fats. The option described as matching fats, starch, and proteins to the wrong enzymes would not reflect how digestion actually works.