Question

The enveloped viruses typically obtain their envelope

A) from the host plasma membrane.
B) as they exit the host.
C) from a newly constructed viral-derived membrane.
D) from the nuclear membrane.
E) from the host plasma membrane AND as they exit the host.

Answer 1

Enveloped viruses obtain their envelope from the host plasma membrane as they exit the host, using components such as lipids and carbohydrates from the host cell, and proteins from both the host and the virus.

Step-by-step explanation:

The enveloped viruses acquire their lipid bilayer envelope as they exit the host cell. This process occurs when the virus buds from either the host plasma membrane or from an internal membrane such as the nuclear membrane or endoplasmic reticulum. The viral envelope, which contains lipid, proteins, and carbohydrates, is a combination of viral-coded proteins and host cell components; however, the lipids and carbohydrates come entirely from the host. The envelope helps the virus to infect new cells either by endocytosis or through fusion with the host cell's plasma membrane.