Which of the Following is CORRECT Regarding the Viral Envelope

Question

Which of the following is CORRECT regarding the viral envelope?
A) It contains only viral proteins.
B) It contains only host cell proteins.
C) It is composed of sterols.
D) It is composed of cellular phospholipid membrane, cellular and viral proteins.
E) It is composed of sterols of viral proteins only.

Accepted Answer

The viral envelope is composed of the cellular phospholipid membrane of the host cell and also contains both cellular and viral proteins. This enables the virus to fuse with the host cell membrane during infection and facilitates the release of newly formed virions from the host cell.