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Microbiology > Enterobacteraceae > Flashcards

Enterobacteraceae Flashcards

(30 cards)

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0
Q

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VP (-)

A

Escherichia coli
Shigella sonnei
Citrobacter
Yersinia

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1
Q

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A 
Klebsiella
Enterobacter
Serratia
Hafnia alvei
Raoultella ornitholytica
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2
Q

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A 
Proteus 
Morganella
Providenia
Salmonella spp.
Shigella
Edwardsiella tarda
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3
Q

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VP (+)
ADH (+)

A

Enterobacter cloacae

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4
Q

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LDC (-)

A

Enterobacter cloacae

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5
Q

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ODC (-)

A

Klebsiella pneumoniae

Klebsiella oxytoca

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6
Q

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GEL (+)

A

Serratia marcescens

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7
Q

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Indole (+)

A

Klebsiella oxytoca

Raoultella ornitholytica

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8
Q

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Citrate (-)

A

Hafnia alvei

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9
Q

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H2S (+)

A

Citrobacter freundii

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10
Q

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Citrate (+)

A

Citrobacter

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11
Q

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ODC (-)

A

Citrobacter freundii

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12
Q

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VP (-)
H2S (+)

A

Proteus
Salmonella
Edwardsiella

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13
Q

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ODC (+)

A

Proteus mirabilis
Morganella morganii
Salmonella spp.
Edwardsiella tarda

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14
Q

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LDC (+)

A

Salmonella spp.

Edwardsiella tarda

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15
Q

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VP (-)
Urea (+)

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A

Proteus mirabilis
Proteus vulgaris
Morganella morganii

16
Q

Inostitol (+)

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A

Providencia stuartii

17
Q

Inostitol (-)

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A

Providencia alcalifaciens

18
Q

What are the general characteristics of enterobacteriaceae?

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A
  • Ferment glucose
  • Reduce nitrates to nitrites
  • Oxidase negative
  • Grow on MacConkey agar
19
Q

All enterobacteriaceae are motile except…

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A

Klebsiella, Shigella, Yersinia

20
Q

What type of arrangement is the flagella?

21
Q

R factors

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A

Transfer resistance

22
Q

O antigen

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A

Somatic antigen
Heat stable
Located on the LPS of cell wall (endotoxin production)

23
Q

How much O antigen does rough dry colonies have?

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A

Small amount of O antigen

24
How much O antigen do smooth colonies have?
Large amounts
25
H antigen
Flagellar antigen | Heat labile
26
K (Vi) antigen
Capsular antigen | Heat labile
27
What is the sole carbohydrate in MAC agar?
Lactose
28
Fermentation
Able to utilize glucose or other carbohydrates in the absence of oxygen by using an organic molecule as a final electron acceptor
29
What causes an organism to be a late lactose fermentor?
B-galactosidase, but lack permease so it takes longer for extracellular lactose to move intracellularly

Microbiology (3 decks)

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