15 Questions
What distinguishes Klebsiella colonies on MacConkey agar?
Glistening, mucoid character
Which agar is commonly used for the primary isolation of Salmonella?
Blood Agar
Which test is commonly used for the selective recovery of Salmonella from stool culture?
Salmonella-Shigella (SS) Agar
What distinguishes Shigella colonies on SS agar?
Colorless colonies
Which member of the Enterobacteriaceae family shares the ability to swarm over the surface of media?
Proteus mirabilis
Enterobacteriaceae is a large diverse family of bacteria commonly referred to as the ______ rods
Gram-negative
Enterobacteriaceae bacteria are normal flora of the ______ tract of humans and animals
intestinal
Genus and species designations are based on ______ characteristics, such as patterns of carbohydrate fermentation
phenotypic
The genera containing the species most virulent for humans( true pathogens) are: Escherichia, Shigella, Salmonella, Klebsiella, ______
Yersinia
If motile, Enterobacteriaceae bacteria possess a ______ arrangement of flagella
peritrichous
Most strains of E coli ferment ______ rapidly
lactose
Klebsiella colonies on MacConkey agar have a glistening, mucoid character due to the presence of a polysaccharide ______
capsule
Salmonella usually produce non-hemolytic smooth white colonies on ______ Agar
Blood
Shigella do not ferment ______ or produce hydrogen sulfide gas
lactose
Proteus mirabilis and Proteus vulgaris share the ability to swarm over the surface of ______, rather than remaining confined to discrete colonies
media
This quiz covers the definition, classification, and characteristics of Enterobacteriaceae, a family of Gram-negative, fermentative bacteria commonly found in the intestinal tract of humans and animals. It includes information on genus and species designations based on phenotypic characteristics.
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