NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Viruses cannot reproduce outside a living organism
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Viruses do not contain genetic material
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Viruses cannot cause diseases in other organisms.
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Viruses do not contain organic compounds
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Detailed explanation-1: -Outside of a host cell, viruses do not use any energy. They only become active when they come into contact with a host cell. Once activated, they use the host cell’s energy and tools to make more viruses. Because they do not use their own energy, some scientists do not consider them alive.
Detailed explanation-2: -Because they can’t reproduce by themselves (without a host), viruses are not considered living. Nor do viruses have cells: they’re very small, much smaller than the cells of living things, and are basically just packages of nucleic acid and protein.
Detailed explanation-3: -They need to use another cell’s structures to reproduce. This means they can’t survive unless they’re living inside something else (such as a person, animal, or plant). Viruses can only live for a very short time outside other living cells.
Detailed explanation-4: -Viruses lack cellular machinery and hence do not show any characteristics of life until they enter a living body/host and use the host cell to multiply.