ch 24 bio final

how are viruses classified

by their host range and other characteristics

the five stages of a lytic infection are attachment, penetration, _, assembly, and release

replication

the specificity of viruses to different types of cells if due to _ sites on the host cell

receptor

which characteristic defines a virus

viruses cannot metabolize

what are the viruses that attack bacteria

phages

viral infections in humans spread via the circulatory system. viral infections in plants spread from cell to cell via

plasmodesmata

Which statement about viruses is FALSE?

a. Viruses are not cellular. [b.] Viruses can manufacture proteins. c. Viruses cannot carry on metabolic activities. d. Viruses can only replicate by infecting other cells. e. Viruses have a protective protein coat called a capsid.

what type of conversion occurs when a bacterium carrying viral genes takes on new, atypical characteristics

lysogenic

which statement best describes a temperate virus

a temperature virus does not always destroy its host

which statement describes a virulent phage

a virulent phage destroys bacteria

before an animals cell membrane fuses with a virus, the virus must first

attach to a specific receptor on the plasma membrane of the host cell

what is the protein coat of a virus called

capsid

what is the purpose of phage therapy

to target specific bacteria in the body and destroy them