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bacteriology.. > enterics 2 > Flashcards

enterics 2 Flashcards

1
Q

what parasite mimic traveler’s diarrhea

a. giardia lamblia
b. a. lumbricoides
c. necator americanus

A

Parasite that mimic the traveler’s diarrhea / ETEC

- Giardia lamblia

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2
Q

what escherichia coli strains is Montezuma revenge

a. ETEC
B. EPEC
C. EHEC
D. EIEC

A

ENTEROTOXIGENIC E. COLI (ETEC)

  • grows only on BAP
  • epidemic diarrhea , montezuma revenge, turista diarhea
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3
Q

most common cause of gram negative health care - associated infection

a. Escherichia coli
b. klebsiella
c. proteus
d. enterobacter

A

Escherichia coli

  • most common cause of gram negative health care - associated infection
  • 90% major cause of UTI (UPEC strain)
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4
Q

agent of severe outbreaks in newborn nurseries in the u.s

a. etec
b. epec
c. ehec
d. eiec

A

enteropathogenic e. coli (EPEC)

  • seen in newborns and infants
  • wtaery diarrhe but no blood
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5
Q

enterohemorrhagic e. coli (EHEC) causes bloody diarrhea from ___________ production, which is a cytoplasm resembling by shigella

a. intimin
b. hydrochloric acid
c. verotoxin

A

verotoxin

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6
Q

which of the following strain of e. coli is associated to HEMORRHAGIC COLITIS AND HEMOLYTIC UREMIC SYNDROME

a. EPEC
B. ETEC
C. EIEC
D. EHEC

A

ENTEROHEMORRHAGIC E. COLI

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7
Q

WHICH OF THE FOLLLOWING STRAINS OF E. COLI MOST COMMON CAUSE OF UTI IN HUMANS

A. DAEC
B. EAEC
C. UPEC
D. ETEC

A

UROPATHOGENIC E. COLI

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8
Q

which of the following serotype of e. coli is negative for sorbitol

a. e. coli 015:H7
b. upec
c. eaec
d. anaerobic e.coli

A

E. coli 015:H7

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9
Q

what medium to used in E.coli 015:H7

.a mac

b. emb
c. smac

A

smac

(+) colorless

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10
Q

diffusely pattern and causes diarrheal syndrome with WATERY STOOL without rbc or wbc present

a. DAEC
b. EAEC
c ETEC

A

DAEC
- watery

EAEC
- mucoid

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11
Q

this e. coli causes watery stool, MUCOID diarrhea without rbc or wbc in the stool

a. DAEC
b. EAEC
c ETEC

A

DAEC
- watery

EAEC
- mucoid

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12
Q

which of the following species of shigella is negative to mannitol

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

mannitol – onpg
s. dysenteriae - - - -

s. flexneri + - -
s. boydii + - -
s. sonnei + - +
ans: shigella dysenteriae

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13
Q

which of the following species of shigella is positive to ONPG

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

mannitol – onpg
s. dysenteriae - - - -

s. flexneri + - -
s. boydii + - -
s. sonnei + - +

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14
Q

which of the following gram negative spp causes Bacillary dysentery

a. e. coli
b. shigella
c. klebsiella
d. proteus

A

shigella

causes SHIGELLOSIS or BACILLARY DYSENTERY

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15
Q

most prevalent spp of shigella in U.S

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

shigella sonnei

  • most prevalent
  • most common
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16
Q

what enrichment medium to be used in shigella

a. bap
b. emb
c. cin
d. selenite f broth

A

selenite f broth

17
Q

which of the following shigella species is a late lactose fermenter

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

s. sonnei

- is a late lactose fermenter and has a positive reaction on onpg test

18
Q

which of the following shigella species is one of the cause of GAY BOWEL SYNDROME

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

SHIGELLA FLEXNERI

- GAY BOWEL SYNDROME

19
Q

rust tinged sputum

a. s. penumoniae
b. klebsiella pneumoniae

A

streptococcus pneumoniae
- rust tinged sputum

klebsiella pneumoniae
- currant jelly like sputum

20
Q

also known as friendlanders bacillus

a. e. coli
b. shigella
c. klebsiella
d. proteus

A

klebsiella pnuemoniae

- friedlanders bacillus

21
Q

what species of klebsiella is encapsulated and appears mucoid and also tend to form a string

a. klebsiella pnuemoniae
b. klebsiella oxytoca
c. klebsiella granulomatis
d. klebsiella ozaenae

A

klebsiella pnuemoniae

  • friedlanders bacillus
  • encapsulated
  • appers as mucoid
  • tend to form a string
  • cause of PRIMARY BACTERIAL PNUEMONIA
  • currant jelly like
22
Q

donovan body

a. klebsiella pnuemoniae
b. klebsiella oxytoca
c. klebsiella granulomatis
d. klebsiella ozaenae

A

klebsiella granulomatis

  • causes granuloma inguinale
  • donovan body
23
Q

which of the following klebsiella spp is indole positive

a. klebsiella pnuemoniae
b. klebsiella oxytoca
c. klebsiella granulomatis
d. klebsiella ozaenae

A

k. oxytoca

- the only indole positive in klebsiella

24
Q

which of the species of Enterobacter is most frequent clinical isolate

a. enterobacter cloacae
b. enterobacter sakazakii
c. enterobacter gergoviae
d. enterobacter aerogenes

A

Enterobacter aerogenes

- the most frequent clinical isolates

25
Q

which of the species of Enterobacter found as contaminant of powdered infant formula

a. enterobacter cloacae
b. enterobacter sakazakii
c. enterobacter gergoviae
d. enterobacter aerogenes

A

enterobacter sakzakii (now: Cronobacter sakazakii)

  • contaminant on powdered infant formula

BHIA - yellow pigemntation

26
Q

which of the species of Enterobacter has a STRONG UREASE ACTIVITY

a. enterobacter cloacae
b. enterobacter sakazakii
c. enterobacter gergoviae
d. enterobacter aerogenes

A

enterobacter gergoviae

  • strong urease activity
  • inable to ferment adonitol and sorbitol
27
Q

Serratia species exhibit pink to red colonies due to production of __________ pigments after incubation

a. uroerythin
b. urochrome
c. staphylokinase
d. prodigiosin

A

serratia

non diffusible red pigment PRODIGIOSIN is exhibited by the organism when incubated at 35 degree celsius

28
Q

which of the following serratia species cause bacteremic outbreaks in nurseries, cardiac surgery units and burn units

a. serratia marcescens
b. serratia liquifaciens
c. serratia rubidaea

A

serratia marcescens

  • most significant spp
  • associated with PNEUMONIA AND SEPTICEMIA in immunosuppressed patients including undergoing chemotherapy

bacteriology.. (17 decks)

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