Enterobacteriaceae

Question 1

not normal flora

true pathogens

Answer 1

“YerSaShi”
Yersinia
Salmonella
Shigella

Question 2

not motile

Answer 2

“SKY”
Shigella
Klebsiella
Yersinia

Question 3

Encapsulated

Answer 3

Klebsiella

Question 4

Extended Spectrum B-Lactamase

Answer 4

Escherichia coli

Klebsiella

Question 5

Causes UTI

Answer 5

“PEK”
Proteus mirabilis
Escherichia coli
Klebsiella pneumoniae

Question 6

Urease positive

Answer 6

"SPEK"
Serratia
Proteus
Enterobacter
Klebsiella

Question 7

PAD (Phenylalanine deaminase positive)

Answer 7

“ProM”
Proteus
Providencia
Morganella

Question 8

Sorbitol negative

Answer 8

E.coli O157:H7

Question 9

Rapid urease producers in Christensen’s agar

Answer 9

Proteus

Morganella

Question 10

Citrate positive

Answer 10

"SPECKS"
Salmonella
Providencia
Enterobacter
Citrobacter
Klebsiella
Serratia

Question 11

DNASE positive

Answer 11

Serratia

Question 12

primary marker for fecal contamination of water purification

Answer 12

E.coli

Question 13

E. coli antigen that cross reacts with Shigella

Answer 13

O antigen

Question 14

E.coli antigen that causes neonatal meningitis

Answer 14

K1 antigen

Question 15

cause of currant-jelly like sputum

Answer 15

Klebsiella pneumoniae

Question 16

most virulent factor of Klebsiella pneumoniae

Answer 16

capsule

Question 17

chronic atrophic rhinitis

Answer 17

K. pneumoniae subspp. OZONAE

Question 18

granuloma of nose

Answer 18

K. pneumoniae subspp. RHICOSCIEROMATIS

Question 19

lysine decarboxylase negative Enterobacter

Answer 19

E. cloacae

Question 20

arginine decarboxylase negative Enterobacter

Answer 20

E. aerogenes

Question 21

contaminant of powdered infant milk formula

Answer 21

Cronobacter (Enterobacter) sakazakii

Question 22

triple decarboxylase negative

Answer 22

Pantoea agglomerans

Question 23

red pigment of Serratia

Answer 23

prodigiosin

Question 24

potato-like odor Serratia/musty pungent

Answer 24

S. odorifera

Question 25

cause osteomyelitis after motorcycle accident

Answer 25

Serratia plymuthica

Question 26

beer wort of breweries

Answer 26

Hafnia alvei:biotype 1

Question 27

associated with renal stone formation

Answer 27

Proteus

Question 28

shows swarming motility

Answer 28

Proteus mirabilis

Question 29

odor of Proteus spp

Answer 29

burnt chocolate/burnt gun powder odor

Question 30

plant pathogen

Answer 30

Erwinia

Question 31

bacilli in cold blooded animals

Answer 31

Edwardsiella

Question 32

cause of endocarditis in IV drug users

Answer 32

Citrobacter freundii

Question 33

most serious Enterobacteriaceae

Answer 33

Salmonella

Question 34

colonial morphology of Salmonella

Answer 34

colonies have black centers (SSA)

green (HE agar)

Question 35

peanut butter outbreak

Answer 35

Salmonella Typhimurium

Question 36

Typhoid fever unique characteristic

Answer 36

rose spots at second week of fever

Question 37

Gay bowel Syndrome

Answer 37

Shigella flexneri

Question 38

characterised by rectal prolapse

Answer 38

bacillary dysentery

** caused by S. dysenteriae type 1

Question 39

bipolar staining/safety pin appearance

Answer 39

Yersinia pestis

Question 40

appearance of Yersinia pestis in broth

Answer 40

stalactite apperance

Question 41

bull’s eye colonies in CIN

Answer 41

Yersinia enterocolitica

Question 42

ferment rhamnose

Answer 42

Yersinia pseudotuberculosis

Question 43

triple decarboxylase positive organism

Answer 43

Plesiomonas shigelloides

Question 44

colonial morphology of Plesiomonas shigelloides in CIN agar

Answer 44

Apron like colonies

Question 45

optimal temperature for Yersinia and Serratia

Answer 45

1-5C

Question 46

ratio of lactose:sucrose:glucose in TSIA

Answer 46

10:10:1

Question 47

difference of KIA from TSIA

Answer 47

KIA: no sucrose

Question 48

VP reagent

Answer 48

40% KOH; alpha naphtol