non-fermentative gram negative bacilli

Question 1

non-fermentative gram-negative bacilli are considered as what kind of pathogens?

Answer 1

opportunistic

Question 2

habitat non-fermentative gram negative bacilli

Answer 2

water, soil, vegetables, food, and hospital surface

Question 3

non-fermentative gram negative bacilli can withstand what disinfectants?

Answer 3

chlorhexidine

Question 4

they oxidize carbohydrates to derive energy for their metabolism

Answer 4

oxidizers

Question 5

do not break down carbohydrates at all

Answer 5

nonoxidizers

Question 6

why is acid production absent in oxidative-fermentative (OF) media?

Answer 6

they are oxidative

Question 7

two ways on how bacteria utilizes carbohydrates

Answer 7

fermentation and oxidation

Question 8

bacteria can utilize carbohydrates with or without oxygen

Answer 8

fermentation

Question 9

bacteria require oxygen

Answer 9

oxidation

Question 10

meaning of OF test

Answer 10

oxidative-fermentative test

Question 11

determines the ability of organisms to utilize a substrate

Answer 11

oxidative-fermentative test

Question 12

positive result of OF test in an open tube

Answer 12

exhibit a yellow color

Question 13

positive result of OF test in a closed tube

Answer 13

exhibits a green/blue-green color

Question 14

it is a medium of OF test with 1& carbohydrate and bromothymol blue as pH indicator

Answer 14

Hugh and Leifson medium

Question 15

it is a standardized system for the identification of non-fastidious, non-enteric Gram-negative rods

Answer 15

API 20NE

Question 16

provides automated approaches to the identification of a variety of bacteria and yeasts

Answer 16

VITEK-2 Compact

Question 17

a method for the identification of bacteria and fungi based on the analysis of unique spectra of their peptides

Answer 17

MALDI-TOF MS

Question 18

vigorous-fast swimming bacterium as seen in samples from the wild or from patients

Answer 18

I.pseudomonas

Question 19

I.pseudomonas is a major pathogen among patients with what condition?

Answer 19

cystic fibrosis

Question 20

two classifications of pseudomonas

Answer 20

palleroni and kersters

Question 21

most commonly isolated species

Answer 21

Pseudomonas aeruginosa

Question 22

leading cause of nosocomial respiratory tract infections

Answer 22

Pseudomonas aeruginosa

Question 23

it is the most important virulence factor of P.aeruginosa

Answer 23

exotoxin a

Question 24

a blue green pigment, produced only by P.aeruginosa

Answer 24

pyocyanin

Question 25

prevents the bacteria from phagocytosis

Answer 25

capsular polysaccharide

Question 26

it occurs among IV drug abusers

Answer 26

infective endocarditis

Question 27

leads to sepsis and septic shock

Answer 27

bacteremia

Question 28

mild febrile illness resembling typhoid fever

Answer 28

shanghai fever

Question 29

an acute necrotizing condition resulting from bacteremia

Answer 29

ecthyma gangrenosum

Question 30

cause outbreaks in spas and pools

Answer 30

dermatitis

Question 31

inflammation of the tissues adjacent to the nail with green pus formation (paronychia)

Answer 31

green nail syndrome

Question 32

lab diagnosis for pseudomonas

Answer 32

skin lesions, pus, urine, blood

Question 33

gram negative rods, occurs singly, in pairs, and occasionally in short chains

Answer 33

Pseudomonas aeruginosa

Question 34

nutrient agar produces large, opaque and irregular colonies with a metallic sheen described as what?

Answer 34

Iridescence

Question 35

pigments can be enhanced in special media such as?

Answer 35

King's media

Question 36

odor of colonies

Answer 36

sweet ether

Question 37

what causes the grape-like odor

Answer 37

2-aminoacetophenone

Question 38

used as selective medium for the isolation of Pseudomonas aeruginosa from pus, sputum and drains etc

Answer 38

cetrimide agar

Question 39

is used for the isolation of P.aeruginosa from food and water samples

Answer 39

cetrimide nalidixic acid agar

Question 40

is recommended for differentation of aeruginosa from other non-fermentative gram-negative bacteria

Answer 40

acetamide agar

Question 41

treatment for pseudomonas

Answer 41

penicillins

Question 42

a rare isolate wrinkled, leathery and produes light-yellow pigment

Answer 42

Pseudomonas stutzeri

Question 43

can cause UTI

Answer 43

P. fluorescens and P. putida

Question 44

Isolated from soil and water (Japanese rice paddies, hospital drains)

Answer 44

P. luteola and oryzihabitans

Question 45

Gives greenish yellow color, produced by all species

Answer 45

pyoverdin

Question 46

imparts red color

Answer 46

pyorubin

Question 47

imparts brown black color

Answer 47

pyomelanin