The protein coat of virus is called:
Correct answer: A. Capsid
- A. Capsid
- B. Cosmid
- C. Capsomere
- D. Chromophore
Explanation
The outer protein coat of a virus is known as 'the capsid'. It consists of several oligomeric structural subunits made of a protein called protomers, which cover the nucleic acid, present in the virus, and protects it when the virus inserts itself into the host. The capsid proteins also help the virus attach and penetrate the host cells, thereby infecting the host. Hence, option A is correct.
This question appeared on the UHS MDCAT 2019 paper, which you can sit online with every answer explained.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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