Viruses are called non-cellular infectious entities because:
Correct answer: C. They cause infections and can only replicate inside living cells
- A. They are pathogens and cause infections
- B. They can replicate inside as well as outside the living cells
- C. They cause infections and can only replicate inside living cells
- D. They have a capsid to infect the host
Explanation
They cause infections and can only replicate inside living cells - Correct. Viruses are obligate intracellular parasites, meaning they need a host cell to reproduce.
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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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