Chapter 7. Viruses. What is a virus?. Characteristics of Viruses Virus is a tiny, nonliving particle that invades and then multiplies inside a living cell Viruses are not cells They do not have the characteristics of organisms
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Once inside a cell, a virus’s genetic material takes over many of the cells function. It instructs the cell to produce the virus’s proteins and genetic material. These proteins and genetic material then assemble into new viruses.