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 20 - Self-Quiz - Page 335: 10


c. endospore

Work Step by Step

An endospore allows certain archaea and bacteria to survive harsh conditions such as extreme heat, cold, dry periods, and ultraviolet radiation. The endospore has an outer covering made of proteins not easily digested by enzymes and an inner layer of a substance called peptidoglycan, which is made up of sugars and amino acids. An organism in this state is dormant and can remain this way for years until conditions become favorable again.
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