5 Questions
What is the scientific classification of Brucella bacteria?
Kingdom: Bacteria, Phylum: Proteobacteria, Class: Alphaproteobacteria, Order: Rhizobiales, Family: Brucellaceae, Genus: Brucella.
What are the characteristics of Brucella bacteria?
Small gram-negative rod-shaped coccobacilli, aerobic, stain red using the modified Ziehl –Neelson method, non-motile, catalase and urease positive, and most isolates are oxidase positive.
What is the natural habitat of Brucella species?
Brucella species are obligate parasites with a preferred natural host that serves as a reservoir of infection, and they have a predilection for ungulate placentas, foetal fluids, and testes of bulls, rams, and dogs.
How do Brucella species appear on primary isolation?
Smooth forms, small, glistening, bluish, and translucent after incubation for 3-5 days, becoming opaque with age, while other species occur in rough forms, with dull, yellowish colonies.
What is brucellosis and what is its cause?
Brucellosis is a zoonosis caused by Brucella, and it affects certain species' reproductive organs. Some species cause undulant fever in humans, and they are differentiated by colonial appearance, biochemical tests, specific cultural requirements, and growth inhibition by dyes.
Test your knowledge of Brucella bacteria with this quiz on its scientific classification and key characteristics, such as its morphology, staining properties, and pathogenicity.
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