EVERYDAY SCIENCE

SCIENCE

VIRUS AND BACTERIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the function of a viral capsid?
A
Bind to surface of host cell
B
Allow it to enter the cell
C
Protect against other viruses
D
Protect against bacteria
Explanation: 

Detailed explanation-1: -A primary function of the capsid is to protect the viral genome from environmental conditions and ultimately to deliver the genome to the interior of a homologous host cell.

Detailed explanation-2: -The essential functions of the capsid are to protect the functional integrity of the viral RNA when the virion is outside the host cell and to initiate the infectious process when a receptor on a suitable host cell is encountered.

Detailed explanation-3: -It has been known for decades that once a virus gets inside a cell, it hijacks the cellular processes to produce virally encoded protein that will replicate the virus’s genetic material.

Detailed explanation-4: -The capsid not only covers and protects the virus but also allows the virus to penetrate a host’s cell membrane, insert viral nucleic acid into the host cell and take over the host cell’s functions. The shape of the viral capsid can also classify viruses.

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