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: Biochemistry
[{'content': 'Enzymes required for mRNA synthesis is/are ? \nSelect and explain. \nA. RNA polymerase I, B. RNA polymerase II, C. Primase, D. Topoisomerase', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., RNA polymerase II It catalyzes the synthesis of mRNA, small nuclear RNA (sn-RNA) and miRNA.These products are coded by class II gene, i.e. class II gene is transcribed by mRNA.Class II gene differ from class I and III in that one of its transcribed products (mRNA) is translated into protein.", 'role': 'assistant'}]