This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enterobecteriaceae, Subject name: Microbiology
[{'content': 'All are motile except: \nSelect and explain. \nA. Klebsiella, B. E. coli, C. Salmonella, D. Proteus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: A (Klebsiella) Ref: Ananthanarayan, Paniker CJ. Textbook of microbiology. 8th Edition. London: John Wiley & Sons; 2009.Explanation:Commonly encountered motile and non-motile bacteriaMotileNon-motileMost Enierobacteriaceae except (Shigella and Klebsiella)Eg: Proteus, E. coli, SalmonellaShigellaViorio (darting motility)KlebsiellaListeria monocytogenes {tumbling motility) Clostridium tetani (stately motility) Spirochaetes (Cork-screw motility) Types of flagella:Peritrichous (flagella present all around) - Escherichia coli, Salmonella Monotrichous (Single polar flagellum) - Vibrio, PseudomonasLophotrichous (tuft of flagella at one pole) - HelicobacterAmphitrichous {one or more flagella at both poles) - Campylobacter', 'role': 'assistant'}]