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: Pharmacology
[{'content': 'The antibiotic that inhibits protein synthesis by premature chain termination and which structurally resembles an aminoacyl t-RNA is - \nSelect and explain. \nA. Tetracycline, B. Chloramphenicol, C. Puromycin, D. Erythromycin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Puromycin o Puromycin is a tRNA analogue which combines with amino acid in place of tRNA and forms a complex with amino acid that prevents addition of fuher amino acids to polypeptide (i.e. causes premature chain termination).", 'role': 'assistant'}]