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': 'The symmetric protein shell which encases the nucleic acid core of virus - \nSelect and explain. \nA. Capsomere, B. Capsid, C. Basidiomycetes, D. Fungi imperfecti', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Capsid The virus consists of a nucleic acid surrounded by a protein coat, the capsid.", 'role': 'assistant'}]