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Which of the following is a function of the digestive system?
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23. The Digestive System
Introduction to the Digestive System
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Which enzyme breaks down protein-forming polypeptides in the stomach?
A
Lipase
B
Amylase
C
Trypsin
D
Pepsin
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Identify the location where the enzyme is active: The stomach is the primary site for the initial digestion of proteins.
Understand the role of enzymes in digestion: Enzymes are biological catalysts that speed up the breakdown of macromolecules like proteins into smaller units.
Recognize the specific enzyme responsible for protein digestion in the stomach: Pepsin is the enzyme that breaks down proteins into smaller peptides in the acidic environment of the stomach.
Differentiate between the enzymes listed: Lipase is involved in fat digestion, Amylase breaks down carbohydrates, and Trypsin is active in the small intestine, not the stomach.
Conclude that Pepsin is the correct enzyme for breaking down protein-forming polypeptides in the stomach, as it is specifically adapted to function in the stomach's acidic conditions.
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