Question

Select wrong statement regarding viruses.

• A. All are obligate intracellular parasites.
• B. Nucleic acid is infectious.
• C. DNA and RNA both present in a virus.
• D. Protective capsid is proteinaceous.

Answer 1

Answer: (C)

DNA and RNA both present in a virus.

C. DNA and RNA both present in a virus

Solution : Virus genome is very small and consist of either DNA or RNA. There is no such virus in which both DNA and RNA are present simultaneously. All the viruses are obligate intracellular parasites as they use host's machinery for their survival (replication). The main infectious component of a virus is its nucleic acid. The protective coat known as capsid, is made of multiple protein subunits called capsomeres.

So the correct answer is "DNA and RNA both present in a virus".