pinkdog155Lv1
13 Nov 2021
Problem 5
Page 475
Section: REVIEW QUESTIONS
Chapter 17: The immune system and disease
Textbook ExpertVerified Tutor
13 Nov 2021
Background and context
Viruses differ in terms of structure, mode of replication, host, and target cells. Viruses are non-cellular as well as parasitic and have no internal organs, metabolic processes, or plasma membranes. Virions may contain either DNA or RNA, an outer layer of proteins, or sometimes an outer membrane composed of a phospholipid membrane that is derived from the host cell and proteins.
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