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Viruses consist of a small collection of genetic material (DNA or RNA) encased in a protective protein coat called a capsid. (Retroviruses are among the infectious particles that use RNA as their hereditary material.
Be sure to discuss the following: 4 nucleic acid core, protein coat or capsid, envelope, viralviral--specific enzymes.specific enzymes. Objective 10  A virus consists of a nucleic acid core surrounded by a protective coat.