Viruses do, however, show some characteristics of living things. They are made of proteins and glycoproteins like cells are. They contain genetic information needed to produce more viruses in the form of DNA or RNA. They evolve to adapt to their hosts.
What do viruses and cells have in common?
According to the information in the Venn diagram, the only structure or component that a virus and a cell have in common is nucleic acid. Thus unlike living cells, viruses do not reproduce: They replicate by controlling the DNA and protein production of a living cell.
What is required for viral reproduction?
Viral replication involves six steps: attachment, penetration, uncoating, replication, assembly, and release. During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it.