Question

Which of the following components does not belong to all viruses?
a. nucleic acid
b. capsid
c. envelope
d. nucleocapsid
e. capsomer

Answer 1

Correct answer will be option c.

Explanation:

• viruses are infectious particle that can replicate only in the living cells
• the main structure of a  virus particle is a core composed of nucleic acid and a capsid, outer covering made of protein.
• capsid is composed of protein molecule. capsomere is the subunit of capsid.
• nucleocapsid means the capsid of a virus particle with  enclosed  nucleic acid.
• virus can be divided into two catagories depending on the presence of envelop, a lipid covering surround capsid.
• virus without envelop is called naked virus and virus with envelop is called enveloped virus.
• so the envelope does not found in all viruses.