Which of the following is RNA virus?: (A) Hepatitis B virus, (B) Parainfluenza virus, (C) Adenoviruses, (D) Herpes simplex virus.
Answer is B. Option 2: Parainfluenza virus contains a single-stranded, nonsegmented, negative- sense RNA genome with nucleoproteins P and L. It is surrounded by a helical nucleocapsid, which contains glycoprotein spikes. Options 1,3 ,5 are DNA viruses. List of DNA viruses: Herpes viruses (Herpesviridae family) HBV Parvovirus B virus HPV JC virus and BK virus Variola (Smallpox) and Molluscum contagiosum virus Human adenovirus