Question

The protein coat of a virus

a) Is called a capsomere.
b) Is called a capsid.
c) Protects the nucleic acid.
d) Is involved in recognition of host cell receptors.
e) Is called a capsid, protects the nucleic acid, AND is involved in recognition of host cell receptors.

Answer 1

The protein coat of a virus is termed a capsid, composed of capsomeres. It functions to shield the viral genome and enables interaction with host cells via glycoproteins.

Step-by-step explanation:

The protein coat of a virus is indeed called a capsid, which is made up of smaller protein subunits known as capsomeres. This capsid serves not only to protect the viral nucleic acid but also plays a crucial role in the recognition of host cell receptors. Some viruses possess an outer layer called a viral envelope, which is derived from the host cell's membrane and further aids in the infectious process, often featuring glycoproteins that facilitate attachment to host cells.