The average diameter of large viruses is approximately equal to:
Correct answer: B. 20 to 250 nm
- A. 100 to 160 nm
- B. 20 to 250 nm
- C. 100 nm to 360 nm
- D. Always below than 100 nm
Explanation
The average diameter of viruses is generally considered to be between 20-250 nanometers (nm), although some viruses can be smaller or larger than this range. So, the correct option is B.
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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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