Gram - Bacilli: Enterobacteriaeceae - lactose and non lactose fermenting

Question 1

Name the 2 lactose fermenting enterobacteriaceae

Answer 1

E coli  (capsule) 
Klebsiella pneumonia

Question 2

______: UTI, traveler’s diarrhea & neonatal meningitis

Answer 2

E coli

It is : Heat Labile & Heat stable

Question 3

Name the 3 antigens for E Coli

Answer 3

K: capsule antigen
O: Cell wall
H: flagellar antigen –> motile

Question 4

What virulece factors does E Coli have

Answer 4

Pili: for attachment
Capsule
O: cell wall antigen

Question 5

MCC of cystitis & pyelonephritis (UTI) : _____ bact

Answer 5

E. Coli

Question 6

MacConkey’s agar will be a ____ color for E Coli

EMB: will be ____ color for E Coli

Answer 6

MacConkey: rose pink

EMB: green sheen

Question 7

________: cause pneumonia and UTI infections in DM and alcoholics.
- it produces a currant jelly sputum

Answer 7

Klebsiella Pneumoniae

lactose fermenter

Question 8

_______: Food poisoning: enterocolitis & enteric fever
• typhoid
* multiplies in the Peyer’s pathes (SI)

Answer 8

Salmonella

produced H2S

Question 9

Name the 3 antigens present with salmonella

Answer 9

Ag: cell wall
H Ag: flagella
Vi Ag: S. typhi

Question 10

Salmonella diagnosis:
______ agar: black color bc of the H2S production
______ Test: rising AB of O,H,Vi antigens

Answer 10

Triple sugar agar

Widal test

Question 11

_______: causes Dysentery- diarrhea with bl. and mucus

• No H2S, no lactose fermenting , not motile

Answer 11

Shigella

Dysentery: sever
S. Sonnei: mild

Question 12

____ bact is featured with :

Produces: Urease
Swarming growth
Weil-Felix reaction: O antigen

Answer 12

Proteus

Question 13

___________: is a Proteus that causes pneumonia in cystic fibrosis, sepsis in burns and UTI

• Motile + pili
• oxidase +
• Green in agar

Answer 13

Pseudomonas aeruginosa

- nosocomial