Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 39 - Self-Quiz - Page 705: 7


a. stomach

Work Step by Step

Hydrochloric acid in the stomach reduces its pH to about 2. Because of the increased acidity, the protein pepsinogen present in the stomach is converted to pepsin, an enzyme that breaks down the bonds between amino acids. The result is that the proteins are broken down into smaller polypeptides.
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