Type of Virus And its Impact
A virus is a small parasite that cannot reproduce by itself. Once it infects a susceptible cell, however, a virus can direct the cell machinery to produce more viruses. Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion , consists of the nucleic acid and an outer shell of protein . The simplest viruses contain only enough RNA or DNA to encode four proteins. The most complex can encode 100 – 200 proteins. https://www.ncbi.nlm.nih.gov/books/NBK21523/figure/A1410/?report=objectonly
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