Question

Virus with nucleic acid but without protein coat is

• A. Virion
• B. Viroid
• C. Capsid
• D. Prion

Answer 1

The correct option is B Viroid

a) The virion is an entire virus particle consisting of an outer protein shell called a capsid and an inner core of nucleic acid.

b) Viroids are the smallest infectious pathogens which are composed of a short circular RNA without protein coats. It is an infectious particle smaller than any of the known viruses and an agent of certain plant diseases.

c) A capsid is the protein shell of a virus.

d) A prion is an abnormal form of a normally harmless protein found in the brain that is responsible for a variety of fatal neurodegenerative diseases of animals including humans.

So, the correct answer is 'Viroid'.