What is a virus made of?
DNA or RNA and a protein coat
A virus is a tiny, infectious particle that consists of a nucleic acid genome (either DNA or RNA) enclosed in a protein coat called a capsid. Some viruses also have an outer envelope made of lipids. The nucleic acid and protein components of a virus are simple in structure, but they are arranged in a very specific and complex way to enable the virus to infect and replicate inside the cells of its host organism. Additionally, some viruses may have other structures or enzymes that assist with infection or replication inside host cells.
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