Enterobacteriaceae

Question 1

K/A H2S (-)

Answer 1

Yersinia enterocolitica
Yersinia pestis
Escherichia coli
Serratia liquefaciens
Serratia marcescens
Shigella dysenteriae
Shigella flexneri
Shigella boydii
Shigella sonnei
Providencia rettgeri
Providencia stuartii
Morganella morganii
Citrobacter freundii
Citrobacter koseri

Question 2

K/A H2S (+)

Answer 2

Salmonella spp.
Proteus mirabilis
Proteus vulgaris
Arizonae (Salmonella enterica subsp. arizonae)
Citrobacter freundii
Citrobacter koseri
Edwardsiella tarda

Question 3

A/A H2S (-)

Answer 3

Escherichia coli
Klebsiella pneumoniae
Klebsiella oxytoca
Enterobacter aerogenes
Enterobacter cloacae
Serratia liquefaciens
Serratia marcescens

Question 4

A/A H2S (+)

Answer 4

Salmonella spp.
Proteus mirabilis
Proteus vulgaris
Citrobacter freundii
Citrobacter koseri

Question 5

Citrate (+)

Answer 5

Klebsiella pneumoniae
Klebsiella oxytoca
Enterobacter aerogenes
Enterobacter cloacae
Serratia marcescens
Serratia liquefaciens
Hafnia alvei
Salmonella spp.
Proteus mirabilis
Providencia rettgeri
Providencia stuartii
Citrobacter koseri
Citrobacter freundii

Question 6

Urease (+)

Answer 6

Providencia rettgeri
Proteus mirabilis
Proteus vulgaris
Morganella morganii
Citrobacter koseri
Klebsiella pneumoniae
Klebsiella oxytoca
Enterobacter cloacae
Yersinia enterocolitica

Question 7

Lysine Decarboxylase (+)

Answer 7

Morganella morganii (biogroup B)
Serratia spp.
Enterobacter aerogenes
Klebsiella spp.
Eschericia coli
Salmonella spp.
Edwardsiella tarda

Question 8

Indole (+)

Answer 8

Morganella morganii
Proteus vulgaris
Escherichia coli
Klebseilla oxytoca
Providencia rettgeri
Providecia stuartii
Edwardsiella tarda
Citrobacter koseri
Plesiomonas shigelloides

Question 9

PAD (+)

Answer 9

Providencia
Proteus
Morganella

Question 10

MR (-)

Answer 10

Klebsiella pneumoniae
Klebsiella oxytoca
Enterobacter aerogenes
Enterobacter cloacae
Serratia marcescens
Serratia liquefaciens (VP+)
Hafnia alvei