A gram-negative, nonsporulating rod that is highly motile, oxidase negative, facultatively aerobic, ferments glucose, and urease-positive is likely to be of which genus?
A) Pseudomonas
B) Proteus
C) Lactobacillus
D) Rickettsia

Question

Quizplus · Accepted Answer

The characteristics described are typical of the genus Proteus, including the highly motile, oxidase-negative, gram-negative rod that is facultatively anaerobic, ferments glucose, and is urease-positive. Pseudomonas is oxidase-positive and Lactobacillus is not motile. Rickettsia is a small intracellular gram-negative organism and does not have the described characteristics.

A Gram-Negative, Nonsporulating Rod That Is Highly Motile, Oxidase Negative