An isolated virus is not considered living since it________________?
Correct answer: B. Can not metabolize
- A. Separates in to two inner parts
- B. Can not metabolize
- C. Rapidly looses its Genome chemical inert
- D. Is coated with an air tight shield
Explanation
An isolated virus cannot perform independent metabolism because it lacks cellular machinery such as ribosomes and metabolic enzymes. Students may choose the genome-related option because viral particles can lose infectivity outside a host, but the fundamental reason they are not considered independently living is their metabolic dependence.
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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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