Bacteria are used in experiments to study the effects of changing temperature on the growth of microbes instead of viruses because

Viruses cannot reproduce outside a host

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Bacteria reproduce faster than viruses

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Viruses do not have cell walls

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Bacteria are larger than viruses

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Solution

The correct option is A Viruses cannot reproduce outside a host
Viruses are infectious agents that have genetic material in the form of DNA or RNA surrounded by a protein capsid. They do not possess the cellular requirements and organization essential for replication on their own. Hence in order to survive and multiply they require the host machinery and hence cannot be used in experiments. Thus, the correct answer is option A.

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Similar questions

Which of the following statement(s) is/are true about viruses?

i. Viruses are smaller than the bacteria

ii. Viruses are active outside the host cell

iii. Viruses use the host cell to reproduce

iv. Viruses do not contain DNA or RNA

The micro-organisums which can reproduce and multiply only inside the cells of other organisms are :

(a) protozoa (b) fungi (c) bacteria (d) viruses

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