Viruses are considered to be non-living entities and do not belong to any biological domain. According to the three-domain system of classification, Viruses are not considered to be part of the domain Bacteria, Archaea, or Eukarya (which includes all living organisms with eukaryotic cells, such as animals, plants, fungi, and protists)
Instead, viruses are considered to be their own separate category of biological entity known as a "virus domain". They are considered to be a distinct form of life that exists outside of the three traditional domains.
Viruses are obligate intracellular parasites, meaning that they cannot replicate or carry out metabolism without a host cell. They are composed of genetic material (DNA or RNA) surrounded by a protective coat of protein, called a capsid. They infect a host cell and use the host's metabolic machinery to replicate, sometimes resulting in the destruction of the host cell.
In summary, Viruses are non-living entities, not considered to be part of any biological domain and are considered to be their own separate category of biological entity known as a "virus domain". They are obligate intracellular parasites that infect a host cell and use the host's metabolic machinery to replicate.
