Lesson 8a: enterobacteriae

Question 1

enterobacteriae is an enteric bacteria that tolerate ______ in MacConkey agar

Answer 1

bile salts

Question 2

what are the 3 major enteric & systemic pathogens?

Answer 2

1. E.coli
2. Salmonella serotypes
3. Yersinia species

Question 3

what are the 3 opportunistic pathogens?

Answer 3

1. Proteus species
2. Enterobacter species
3. Klebsiella species

Question 4

what are the 2 non pathogenic enteribacteriae?

Answer 4

1. Hafnia sp
2. Erwinia sp

Question 5

this describes entrobacteriae that are capable of fermenting lactose

Answer 5

Coliform

Question 6

this can be used to detect O (somatic) & H (flagellar) in all 3 species & sometimes can detection of K-capsular, antigen is carried out

Answer 6

Slide agglutination test w/ antisera

Question 7

this allows the identification of the organism involved in disease outbreaks & has application in epidemiological investigations

Answer 7

Serotyping

Question 8

what is the molecular technique used in enterobacteriae?

Answer 8

PCR

Question 9

an opportunistic pathogen has a cultural characteristics of swarming growth

Answer 9

proteus species

Question 10

this 2 opportunistic pathogen has mucoid cultural characteristics

Answer 10

enterobacter aeerogenes
klebsiella pneumonia

Question 11

3 species that is negative on lactose fermentation

Answer 11

salmonella
yersinia
proteus

Question 12

3 species that is positive on lactose fermentation

Answer 12

escherichia coli
eneterobacter
klebsiella

Question 13

this is positive on urease activity except for Y. pestes

Answer 13

Yersinia
proteus
klebsiela

Question 14

what is the species that is positive in indole production

Answer 14

escherichia coli
protes species

Question 15

species positive on methyl red test

Answer 15

escherichia