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': 'Which among the following is a Transcription inhibitor? \nSelect and explain. \nA. Chloramphenicol, B. Streptomycin, C. Puromycin, D. Amanitin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The inhibitors of transcription and its action is very impoant in the entrance exams. Rifampicin: bind beta subunit of polymerase Actinomycin D: inhibit elongation of RNA strands by inhibiting RNA polymerase Streptoglydin Heparin Alpha-Amanitin blocks the translocation of RNA polymerase during transcription Ref: Harper, 27th Edition, Page 351', 'role': 'assistant'}]