What are some properties of a virus?
1. Its genome is surrounded by a protein capsid.2. Its genome consists of DNA or RNA.3. It is an obligate intracellular pathogen.
A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism. Here are some properties of a virus:
1. Structure: A virus is composed of a genetic material (either DNA or RNA) surrounded by a protein coat called a capsid. Some viruses also have a lipid envelope envelope surrounding the capsid.
2. Reproduction: A virus can only reproduce by infecting a host cell. Once inside the cell, the virus takes control of the cell’s machinery and forces it to make copies of the virus.
3. Size: Viruses are much smaller than bacteria or eukaryotic cells, typically ranging from 20-300 nanometers in size.
4. Genetic variability: Viruses exhibit a high degree of genetic variation due to their ability to quickly mutate and evolve.
5. Host specific: Most viruses are host-specific, meaning that they can only infect certain types of cells or organisms.
6. Not considered living: Viruses are not considered living organisms as they lack the metabolic machinery of a living cell and are unable to reproduce without a host cell.
7. Pathogenic: Many viruses cause diseases in humans, animals, and plants, ranging from mild flu-like symptoms to severe illnesses.
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