Molecular Virology:
The study of viruses at the molecular level is known as molecular virology. In host cells, viruses multiply as sub microscopic parasites. Viruses have more biological diversity than the rest of the bacterial, plant, and animal kingdoms put together because they can successfully infect and parasitize a wide range of life forms, including microbes, plants, and animals. The key to a greater understanding of how viruses interact with their hosts, multiply inside of them, and cause diseases is studying this diversity.