Course

Microbiology

Study Pack

Set 19 Enterobacteriaceae

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Question 1

(Multiple Choice)

Free
What genus has the following characteristics: urea negative, positive for lysine decarboxylase, hydrogen sulfide, and indole, and does not grow on Simmon's citrate?

A) Providencia
B) Edwardsiella
C) Escherichia
D) Morganella

Answer

Question 2

(Multiple Choice)

Free
You have isolated a bacterium from a stool culture that produces clear colonies on sorbitol MacConkey (SMAC) agar. Which of the following would be the most appropriate test to perform next?

A) Gram stain
B) Oxidase
C) Rapid methylumbelliferyl-b-D-glucuronide (MUG)
D) Rapid urease

Answer

Question 3

(Multiple Choice)

Free
What organism in the genus Providencia is incriminated in nosocomial outbreaks in burn units and has been isolated from urine cultures?

A) Providencia stuartii
B) P. heimbachae
C) P. rustigianii
D) P. alcalifaciens

Answer