Multiple Choice
Which of the following enzymes is important for the digestion of fat?
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23. The Digestive System
Introduction to the Digestive System
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What type of macromolecule does pepsin primarily digest in the stomach?
A
Nucleic acids
B
Proteins
C
Lipids
D
Carbohydrates
Verified step by step guidance1
Identify the role of pepsin in the digestive system. Pepsin is an enzyme that is secreted by the stomach lining.
Understand the function of pepsin. Pepsin is a protease, which means it breaks down proteins into smaller peptides.
Consider the environment where pepsin operates. Pepsin functions optimally in the acidic environment of the stomach, which is conducive to protein digestion.
Review the types of macromolecules: proteins, carbohydrates, lipids, and nucleic acids. Each has specific enzymes for digestion.
Conclude that pepsin primarily digests proteins, as it is specifically designed to break down peptide bonds in protein molecules.
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