what is virus explain in biology
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A virus is an infectious particle that reproduces by "commandeering" a host cell and using its machinery to make more viruses. A virus is made up of a DNA or RNA genome inside a protein shell called a capsid. ... They come in different shapes and structures, have different kinds of genomes, and infect different hosts.
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A virus is a infectious agent that replicates only inside the living cells of an organism. Viruses can infect all type of forms, from animals and plants to microorganisms including trachea .
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