What is the approximate diameter of a retrovirus?
Correct answer: B. 100 nm
- A. 150 nm
- B. 100 nm
- C. 200 nm
- D. 250 nm
Explanation
The diameter of retroviruses typically ranges from approximately 80 to 120 nanometers (nm). Retroviruses are a family of enveloped viruses characterized by their use of reverse transcriptase to convert their RNA genome into DNA upon entering host cells. The viral particles consist of an outer lipid envelope, viral glycoproteins, and an inner core containing the RNA genome and viral enzymes. The size of retroviruses can vary slightly depending on the specific type of retrovirus.
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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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A phage when viral DNA is incorporated into host DNA is referred to as:
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