A particle cab infect humans and make them sick. It attaches to a host cell and injects it's RNA, which the host uses to make proteins for the particle. This particle cannot reproduce on its own and can only copy itself by using the machinery of the host. Which explains whether the particle described is a virus or a cell?
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A particle cab infect humans and make them sick. It attaches to a host cell and injects it's RNA. These lines explains that the particle described is a virus
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A cell can multiply on its own, unlike virus which is dependent on the host cell. Here as the particle injects it's RNA and by that it's actually using the host to produce proteins, we can see the analogy and specificity of the particle character and conclude that it's a virus which injects its RNA into host... that RNA gets multiplied to produce DNA by reverse transcriptase .. it invades cell genome and make the host cell produce viral protein.
Two main points- Absence of independent multiplicative activity & the tendency to inject its RNA into host cell narrows down to the only answer 'VIRUS'.
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