Chapter 13: Viruses, Viroids, and Prions

In acute viral infections, although the infected host cells may die, the host cell may survive because

The host's immune system may gradually eliminate the virus

By what method can an enveloped virus gain entry into animal cells

- Fusion of the viral envelope and the cell membrane - Endocytosis of the virus by the host cell

Infection of bacteria by ____ phages always ends with the lysis of the host cell.

Lytic

List the steps of an animal virus infection cycle in the correct order

1. Attachment 2. Penetration and uncoating 3. Synthesis of viral proteins and replication of the genome 4. Assembly 5. Release

Symptoms of acute viral diseases result from

Host immune response Host tissue damage

What directs the incorporation of phage DNA into a bacterial chromosome?

Integrase

The rupture or bursting of a cell

Lysis