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1.3 Viruses are not alive but affect living things. Vocabulary Host cell Viruses share some characteristics with living things Viruses multiply inside living cells Viruses may harm host cells The cells viruses infect to make copies of themselves Genetic material with a protein coat called a capsid Much smaller than bacteria Share some characteristics with living things (organized) Not considered living things because they cannot grow, respond or reproduce without help from the host cell. Use host cells to make copies of themselves 5 steps are attachment, injection, production, assembly, and release Once the virus has used the host cell to make copies of itself it often destroys the host cell