Virus envelope is known as

Step-by-step solution

Structurally viruses are very diverse varying widely in size, shape and chemical composition. The nucleic acid of virus is always located within the virion particle and surrounded by a protien shell called capsid. The protein coat is compound of a number of individual protein molecules called structural subunits. The complete complex of nucleic acid and proteins, packaged in the virion is called the virus nucleocapsid.