Asked in PMC Practice Test 18 (2021) 2021Moderate

What does the size of viruses range between?

Correct answer: B. 20nm to 250nm

  • A. 100mm to 150mm
  • B. 20nm to 250nm
  • C. 300nm to 3000nm
  • D. 3nm to 30nm

Explanation

Viruses are pathogens, which cause diseases in animals and plants.The size of a virus ranges between 20nm-250nm in length.Hence, B is the correct option.

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About Viruses

Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.

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