Question

Which is true concerning animal viruses?

a. lack an envelope when they leave the host cell
b. attack the host cell by exocytosis
c. have an outer coat of nucleic acid
d. some have RNA genomes
e. all of the above

Answer 1

Some animal viruses have RNA genomes, and they can have an envelope derived from the host cell membrane. They do not attack the host cell by exocytosis.

Step-by-step explanation:

The correct answer is d. some have RNA genomes. Some animal viruses have RNA genomes, while others have DNA genomes. The viral genome can be single-stranded or double-stranded, and it carries the genetic information of the virus.

Additionally, animal viruses can have an envelope when they leave the host cell. This envelope is derived from the host cell membrane and is studded with viral and host proteins. It helps the virus to attach to the host cell.

Lastly, animal viruses do not attack the host cell by exocytosis. They can enter the host cell through receptor-mediated endocytosis or by forming channels in the host cell membrane.

Answer 2

Answer: D) some have RNA genomes

Step-by-step explanation:

Animal viruses are produced by RNA genome inside the protein shell which are known as capsid. And some of the viruses are outer membrane envelope.

Animal viruses are the tiny package of the protein and the nucleic acid. And it contain the proteins shell and the material of genetic are made up of some RNA inside the capsid. The animal virus are consist of RNA genomes that are single or double stranded.