This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Properties of Virus, Subject name: Microbiology
[{'content': 'Capsid of viral structure is- \nSelect and explain. \nA. Extracellular infectious particle, B. Protein coat around nucleic acid, C. Envelop around a virus, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Protein coat around nucleic acid Structure of viruso The extracellular infectious virus particle is called as the virion.o The virion consist of a nucleic acid surrounded by a protein coat, the capsid.o The capsid with the enclosed nucleic acid is known as the nucleocapsid.o Two kinds of symmetry are encountered in the capsid -a) Icosahedral (cubical)b) Helicalo Virion may be enveloped or nonenveloped (naked).o Envelope is lipoprotein in nature, lipid is derived from host cell, while protein is virus coded.", 'role': 'assistant'}]