Lec 7-3 - Enterobacteriaceae

Question 1

entero are gram blank

Answer 1

negative rods (motile or non motile)

Question 2

entero do not form blank

Answer 2

spores

Question 3

entero grow better with blank but can grow without it

Answer 3

air

Question 4

entero are killed by temperatures above blank

Answer 4

60 degrees C

Question 5

entero are not killed by

Answer 5

freeze/thaw

Question 6

•	E. coli
•	Klebsiella pneumonia
•	Enterobacter
•	Citrobacter
•	Salmonella
•	Shigella
•	Serratia
•	Proteus
•	Providencia
•	Morganella
•	Yersinia sp., including Y. pestis 
•	Noted
 are all blank

Answer 6

enterobacteriaceae

Question 7

•	Campylobacter
•	Vibrio
•	Aeromonas
•	Plesiomonas
•	Helicobacter
•	pseudomonas
are all blank

Answer 7

not entero

Question 8

lactose fermenting gram negative rods are called blank

Answer 8

coliforms

Question 9

increased coliform means increased blank of things like water

Answer 9

fecal contamination

Question 10

selective indicator agar for enterics

Answer 10

macconkey agar

Question 11

on macconkey plate, lactose fermenters turn blank and non lactose fermenters turn blank

Answer 11

pink, white

Question 12

most abundant microbe in the colon capable of growing aerobically

Answer 12

e coli

Question 13

surface marker antigens of e coli

Answer 13

o, h, k

Question 14

antigen of e colithat has somatic antigens, is stable to boiling, and is a repeating sugar on LPS

Answer 14

O

Question 15

antigen of e coli that has flagellar antigens coming out from all sides (halo)

Answer 15

H

Question 16

antigen of e coli that are capsular antigens which some e coli has but some dont

Answer 16

K

Question 17

two diarrheagenic e coli we need to know

Answer 17

ETEC, STEC (EHEC)

Question 18

most common cause of travelers diarrhea in third world countries

Answer 18

etec

Question 19

etec strains can produce these toxins

Answer 19

LT, ST

Question 20

LT is heat blank

Answer 20

labile

Question 21

ST is heat blank

Answer 21

stable

Question 22

LT stimulates blank

Answer 22

cAMP

Question 23

ST stimulates blank

Answer 23

cGMP

Question 24

LT and ST are both enterotoxins and both pour out blank

Answer 24

watery fluid

Question 25

the e coli more common in developed countries

Answer 25

EHEC/STEC, bloody diarrhea

Question 26

transmission from blank can occur with EHEC/STEC

Answer 26

waterparks/swimming pools

Question 27

most notorius EHEC strain that is more virulent

Answer 27

strain 0157

Question 28

only EHEC blank enter the body but the blank do not

Answer 28

toxins, bacteria

Question 29

stx1 of ehec works by cleaving a particular adenine residue from 16S rRNA which halts blank

Answer 29

protein synthesis

Question 30

stx2 is like stx1 but it also blocks blank not just halts it

Answer 30

protein synthesis

Question 31

blank is worse than blank

Answer 31

stx2, stx1

Question 32

most common cause of uti in outpatients

Answer 32

e coli

Question 33

second most common cause of uti in outpatients

Answer 33

proteus

Question 34

infection confined to the urinary bladder

Answer 34

cystitis

Question 35

more severe version of cystitis that extends to the ureters and kidney

Answer 35

pylonephritis

Question 36

all e coli express this type of pili

Answer 36

1

Question 37

invasive enteric infectious organisms that dont just stay in the lumen and go into the mucus and are invasive

Answer 37

salmonella, shigella

Question 38

shigella are most likely to produce blank which is a terrible diarrhea that is chronic and is the butts equivalent of dry heaving

Answer 38

shigella

Question 39

detecting salmonella and shigella on macconkey agar would show blank

Answer 39

white colonies

Question 40

new sensitive agar for detecting salmonella

Answer 40

XLD agar

Question 41

salmonella produces blank colonies on XLD

Answer 41

black (easy to spot)

Question 42

blank inocolum pathogens are usually in contaminated water or food held at higher temperatures like salmonella... secondary cases are rare

Answer 42

high

Question 43

blank inoculum pathogens can be transmitted by bodily contact, swimming pools, ice, can have secondary cases like cruise ships

Answer 43

low

Question 44

most common cause of salmonella food poisoning like in eggs, chicken, pet reptiles

Answer 44

salmonella enterica

Question 45

salmonella naming

Answer 45

o E.g. Salmonella enterica Serotype Enteritidis | o Or Salmonella enterica Serotype Saintpaul