IMMUNOLOGY

Detailed explanation-1: -This process of host cell takeover is known as “molecular hijacking.” When a virus replicates it has to build entire viral particles and it has to not only make the proteins that comprise the viral capsid (and enclose it with an envelope), but it must also replicate its genetic material.

Detailed explanation-2: -So, a virus takes over a living host cell in order to reproduce and spread, causing infection. By inserting its DNA or RNA into a living host cell, the virus takes over the cellular machinery and uses it to make more viruses, spreading itself.

Detailed explanation-3: -Most viral infections eventually result in the death of the host cell. The causes of death include cell lysis, alterations to the cell’s surface membrane and various modes of programmed cell death. Some viruses cause no apparent changes to the infected cell.