Why is it difficult to cure viral infections?

Because viruses are small in size

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Because viruses can change their shape and composition in fraction of seconds

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Because viruses are neither living nor non-living

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None of the above

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Solution

The correct option is B
Because viruses can change their shape and composition in fraction of seconds

Viruses are said to be on the borderline of living and non-living. They do not exhibit any of the vital life processes like respiration, excretion etc. and do not have the necessary cellular machinery for any of them. For reproduction, they use the host's system and resources. Therefore it is difficult to attack them with drugs. Also, viruses change their shape and composition in fractions of a second.

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Similar questions

Question 9
Making anti-viral drugs is more difficult than making anti-bacterial medicines because

(a) viruses make use of the host machinery
(b) viruses are on the border line of living and non-living
(c) viruses have very few biochemical mechanisms of their own
(d) viruses have a protein coat

Viruses are considered as an intermediate between living and non-living because;

Q. Viruses are living because

Q. Viruses are living because _______________.

Q. Viruses are neither living nor non-living.

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