NURSING ANM AND GNM

Detailed explanation-1: -Viruses are obligate intracellular parasites and their reproduction entirely relies on the host cell machinery for the synthesis of viral components such as nucleic acids, proteins and membranes.

Detailed explanation-2: -Viruses can exist either extracellularly or intracellularly. In the extracellular state, the virus is called a virion and isn’t capable of reproducing. A virion consists of a protein coat, called a capsid, surrounding a nucleic acid core which contains the genetic material or the viral genome.

Detailed explanation-3: -Viruses are obligate parasites in that they can only replicate within a living host cell. Thus the science of virology is largely dependent upon the requirement to be able to grow and propagate such host cells.