Complete the given passage with appropriate words or phrases.
Virus is a/an (i) parasite which is inert outside the host cell. An inert virus is called (ii) . Three architectural forms are found in viruses : (iii) , (iv) and (v) . A virus is a (vi) and the genetic material is (vii) . In general, viruses that infect plants have (viii) and viruses that infect animals have (ix) . The protein coat is made up of small subunits called (x) that protects the nucleic acids.
