Day5

Question 1

Lactose fermenter. Genus is biochemically similar to Klebsiella spp.the differentiating factor is one is motile and the other is non motile.

Answer 1

Enterobacter spp.

Question 2

This genus of GNB are non-lactose fermenters, some are slow fermenters. They have the ability to produce a potent toxin.
One species is the most common cause of bacillary dysentery in children.

Answer 2

Shigella spp.

Question 3

Most species are lactose fermenters, produce H2S, Has a characteristic putrid odor. Some species exhibit a swarming phenomenon on BAP and MAC.

Answer 3

Proteus spp.

Question 4

Slow lactose fermenter. Causes diarrhea and secondary infections in debilitated persons. Produces H2S. It is commonly mistaken to be Salmonella on initial stool cultures.

Answer 4

Citrobacter spp.

Question 5

Organisms cause acute mesenteric lymphademitis. Transmission is through ingestion of contaminated food and water. Transferred from rodents to humans by the rat flea. Causative agent of the plague.

Answer 5

Yersinia spp.

Question 6

Additives that can be used to minimize the swarming effect of Proteus spp.

Answer 6

Chloral hydrate and Ethyl alcohol

Question 7

The most frequently isolated human pathogen of the Proteus genus.

Answer 7

Proteus mirabilis

Question 8

Is the most common Salmonella species isolated in the clinical laboratory. Is the most common cause of bacillary food poisoning from inadequate cooked eggs and poultry

Answer 8

Salmonella typhi

Question 9

This genus or normal flora of the intestinal tract of warm blooded animals and humans. Causes problems when the host is immunocompromised or if the organism is out of its normal environment. Are the most common frequently isolated human pathogen. The genus has the ability to produce an exotoxin. The most common cause of UTIs. Causative agent of travelers diarrhea.

Answer 9

Escherichia spp.

Question 10

Most species are lactose free mentors. Organisms can appear red, orange, or yellow on BAP if left at room temperature for 48 to 72 hours. Resists colistin & cephalothin. Most species causes opportunistic infections associated w pneumonia, septicemia, and BURN PATIENTS

Answer 10

Serratia spp.

Question 11

Has characteristics similar to Proteus spp. One organism that previously was classified as a Proteus.

Answer 11

Morganella and Providencia

Question 12

This genus of bacteria has more than 2000 unique SERO types and may produce H2S. All species cause WBCs to pass in the stool.

Answer 12

Salmonella spp.

Question 13

Most are lactose fermenters. A species of this genus has a prominent capsule which gives the organism virulence. Appear as mucous colonies on BAP and MAC. Causative agent of primary lobar pneumonia.

Answer 13

Klebsiella spp.

Question 14

Shiga Toxin Group A

Answer 14

Shigella dysentariae

Question 15

Shiga Toxin Group B

Answer 15

Shigella flexneri

Question 16

Shiga Toxin Group C

Answer 16

Shigella Boydii

Question 17

Shiga Toxin Group D. Slow lactose fermenter.Most common cause of communicable bacterial diarrhea. Common cause of bacillary dysentery (shigellosis) primarily in children.

Answer 17

Shigella sonnei

Question 18

Penetrate epithelial cells in the large intestines

Answer 18

Enteroinvassive E.coli

Question 19

K1 strains

Answer 19

Enteropathogentic E.coli

Question 20

A specific serotype of enterohemorrhagic E.coli, most commonly associated w food borne outbreaks. Toxins destroy the renal epithelial cells, resulting in renal failure and even death

Answer 20

E.coli 157:H7

Question 21

LT toxin heat Labile, ST toxin heat stabile.

Answer 21

Enterotoxigentic E.coli

Question 22

Shigella-like toxin

Answer 22

Enterohemorrhagic E.coli

Question 23

Plague type caused by Y.pestis, that affects the bunks, which are part of the lymphatic system.

Answer 23

Bubonic

Question 24

Plague type caused by Y.pestis, that affects the lungs and breathing passages.

Answer 24

Pneumonic

Question 25

Plague type caused by Y.pestis, that infects the blood stream

Answer 25

Septicemic

Question 26

Species that is the causative agent of bubonic plague(Black Death)

Answer 26

Y.pestis

Question 27

Species that is isolated from stool and causes entercolitis

Answer 27

Y.enterocolitica

Question 28

Which organism can establish disease with few as 200 bacilli ?

Answer 28

Shigella sonnei

Question 29

What are the most commonly isolated species from Citrobacter spp.

Answer 29

C.freundii

C.diversus

Question 30

What Enterobacteriaceae causes lobar pneumonia?

Answer 30

Klebsiella