Question

1. viruses can be grown on culture media like bacteria. (click to select)v 2. animal viruses always kill cells they infect. (click to select)v 3. an envelope is acquired during which step of the viral life cycle? synthesis release penetration adsorption 4. all viruses leave a cell by exocytosis. (click to select)v

Explanation:

1. Viruses are obligate intracellular parasites and cannot be grown on culture media like bacteria which are free - living organisms. So the statement is false.
2. Some animal viruses can establish a latent or persistent infection without killing the host cell. So the statement is false.
3. Enveloped viruses acquire their envelope during the release step of the viral life - cycle when they bud out of the host cell membrane.
4. Not all viruses leave the cell by exocytosis. Non - enveloped viruses can leave the cell by cell lysis. So the statement is false.

Answer:

1. False
2. False
3. Release
4. False