Answer
d.
Work Step by Step
Viruses are considered nonliving because they only reproduce when they are inside of living host cells. Viruses are composed of nucleic acid, protein, and sometimes lipids.
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 20, Viruses and Prokaryotes - Assessment - 20.1 Viruses - Understand Key Concepts/Think Critically - Page 596: 1
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