Question

Which of the following is not associated with virus?

• A. Their genetic material may be DNA or RNA
• B. The virus may replicate in a bacterial host
• C. The virus may replicate in a eukaryotic host
• D. The virus may replicate autonomously in the absence of a host
• E. The protein coat of the virus does not enter a host bacterial cell

Answer 1

Answer: (D)

The virus may replicate autonomously in the absence of a host

Viruses are the simplest and most primitive organisms. A simple virus particle is often designated as a virion, consists of the nucleic acid core of genetic material, enclosed within a protein coat capsid, which does not enter a host bacterial cell. The genetic material in viruses is either DNA or RNA but never both. The virus may replicate in the bacterial host or eukaryotic host. But outside the host viruses are inert, hence they can not replicate autonomously in the absence of a host. Thus, option D is the correct answer.