The average diameter of large viruses is approximately
Correct answer: B. 100 to 200nm
- A. 100 to 160nm
- B. 100 to 200nm
- C. 100 to 360nm
- D. Always below than 100nm
Explanation
Most viruses vary in diameter from 20 nanometers (nm; 0.0000008 inch) to 250-400 nm; the largest, however, measure about 500 nm in diameter and are about 700-1,000 nm in length. Only the largest and most complex viruses can be seen under the light microscope at the highest resolution.
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About Acellular Life
Viruses are acellular infectious particles whose capsid, nucleic acid and host-dependent replication distinguish them from living cells. HIV infection covers transmission, replication, effects on helper T cells, progression to AIDS, symptoms, prevention and treatment, while AIDS is the disease state caused by advanced immune-system damage rather than a separate virus.
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