This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'DNA covering material in a virus is called as - \nSelect and explain. \nA. Capsomere, B. Capsid, C. Nucleocapsid, D. Envelope', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Structure of virus\n\nThe extracellular infectious virus particle is called as the virion.\nThe virion consists of a nucleic acid surrounded by a protein coat, the capsid.\nThe capsid with the enclosed nucleic acid is known as the nucleocapsid.\nTwo kinds of symmetry are encountered in the capsid\n\na) Icosahedral (cubical)\nb)Helical\n\nVirion may be enveloped or nonenveloped (naked)\nThe envelope is lipoprotein in nature, the lipid is derived from the host cell, while protein is virus-coded.\nEnveloped viruses are susceptible to the action of lipid solvents like ether, chloroform and bile salts.', 'role': 'assistant'}]