Why do viruses need living hosts, such as bacteria or eukaryote cells? a Viruses have a cellular structure which never requires a host. b Viruses depend on a host cell because they lack their own DNA or RNA. c The host cell is the source of food for the virus. d Viruses depend on the host cells that they infect to reproduce/replicate.
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The correct answer is d. Viruses depend on the host cells that they infect to reproduce/replicate.
Viruses lack the cellular machinery required for metabolism and reproduction, so they must hijack a living host's cellular systems to replicate and propagate. They rely on the host's machinery to replicate their genetic material and produce new virus particles.
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