What is the size of parvovirus?
Correct answer: C. 20nm
- A. 200nm
- B. 30nm
- C. 20nm
- D. 100nm
Explanation
Parvoviruses are the smallest known animal viruses, measuring only 18-26 nanometers in diameter. They are non-enveloped viruses with an icosahedral capsid and contain a single-stranded DNA (ssDNA) genome. Because of their tiny size and simple structure, parvoviruses rely heavily on the host cell's machinery for replication. An example is the human parvovirus B19, which causes fifth disease in children.
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About Biodiversity and Variety of Life
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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