NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Why are viruses considered to be nonliving organism?
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they do not have genetic information
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they are not able to move on their own
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they do not interact with their environment
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they are no able to reproduce without a host cell
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Explanation:
Detailed explanation-1: -Viruses cannot reproduce outside a living cell because they lack the cellular organisation and independent machinery which is required for the reproduction and other metabolic activities. They can only multiply inside the living cell of host by using host’s cellular machinery.
Detailed explanation-2: -Viruses cannot survive outside the host. They can also be crystallised, which is a property of non-living things. This is the reason why they are considered to be at the borderline of living and non-living things.
Detailed explanation-3: -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.
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