This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Penicillin & Cephalosporin, Subject name: Pharmacology
[{'content': 'Drug that inhibits cell wall synthesis is? \nSelect and explain. \nA. Tetracyclins, B. Penicillins, C. Aminoglycosides, D. Chloramphenicol', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) PenicillinREF: KDT 6th edition page 688MECHANISMS OF ACTIONS OF ANTIBIOTICS:Cell wall synthesis inhibitorsBeta lactams , cycloserine . fosfomvcin , bacitracin , vancomycinProtein synthesis inhibitors * freeze initiation * inhibit elongation* inhibit translocationAminoglycosidesTetracyclines , puromycins , chloramphenicolClindamycin, erythromycinMisreading of RNA codeAminoglycosidesInhibit DNA gyraseNalidixic acid and nitrofurantoinDrugs binding to ribosomes* 30 S - Tetracycline, streptomycin* 50 S - chloramphenicol, clindamycin, erythromycin* Both 30 S and 50 S - Aminoglycosides except streptomycin', 'role': 'assistant'}]