<prompt> Which is true about EnterobacteriaceaeAll are oxidase negativeNitrate reduction negativeGlucose not fermented by allMotility by polar flagellum  <response>: They are motile by peritrichous flagella, ferments glucose producing acid, reduces nitrates to nitrites, but forms catalase, not oxidase. They are non-sporing, non-acid, Gram-negative bacilli that are found in the gut of man and animals. Reference: Textbook of Microbiology; Anathanarayan and panikers; 10th edition; Page no: 279 