THE MOLECULAR BASIS OF INHERITANCE
THE GENETICS OF VIRUSES AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The host range of a virus is determined by
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the enzymes carried by the virus.
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the enzymes produced by the virus before it infects the cell.
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the proteins on its surface and that of the host.
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whether its nucleic acid is DNA or RNA.
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Explanation:
Detailed explanation-1: -The host range of a virus is determined by the presence of receptors.
Detailed explanation-2: -Virus Entry Host range at a cellular level is determined by a combination of susceptibility, the ability of cells to allow entry of virions into the cytoplasm, and permissiveness, the capacity of cells to support cytoplasmic viral replication.
Detailed explanation-3: -A virus identifies its host by fitting its surface proteins to receptor molecules on the surface of the host cell.
Detailed explanation-4: -Recognition of cell surface receptor(s) by virus particle determines the host range and tropism of cell and tissue infection and is the first step in the virus replicative cycle.
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