Question 1

Which of the following is a curved, gram-negative rod that grows on TCBS agar?

Accepted Answer

A) Vibrio 
B) Campylobacter 
C) Clostridium 
D) Fusobacterium 
A) Vibrio 
B) Campylobacter 
C) Clostridium 
D) Fusobacterium A

Question 2

What organism is the most common cause of bacterial gastroenteritis worldwide?

Accepted Answer

A) Campylobacter jejuni 
B) C.fetus 
C) C.lari 
D) C.coli 
A) Campylobacter jejuni 
B) C.fetus 
C) C.lari 
D) C.coli A

Question 3

Aeromonads are generally susceptible to all these antibiotics except:

Accepted Answer

A) trimethoprim-sulfamethoxazole. 
B) ampicillin. 
C) aminoglycosides. 
D) quinolones. 
A) trimethoprim-sulfamethoxazole. 
B) ampicillin. 
C) aminoglycosides. 
D) quinolones. B

Question 4

Aeromonads have been implicated in all of the following diseases except:

Accepted Answer

A) osteomyelitis. 
B) meningitis. 
C) pneumonia. 
D) otitis. 
A) osteomyelitis. 
B) meningitis. 
C) pneumonia. 
D) otitis.

Question 5

Campy-BAP contains:

Accepted Answer

A) Brucella agar base, 10% sheep red blood cells, vancomycin, trimethoprim, polymyxin B, amphotericin B, and cephalothin. 
B) Columbia agar base, 5% sheep red blood cells, erythromycin, spectinomycin, Diflucan, and ampicillin. 
C) Brucella agar base, 5% sheep red blood cells, Zithromax, sulfamethoxazole, nystatin, amphotericin B, and imipenem. 
D) Columbia agar base, glycerol, L-cysteine, hemin, streptomycin, amphotericin B, and gentamicin. 
A) Brucella agar base, 10% sheep red blood cells, vancomycin, trimethoprim, polymyxin B, amphotericin B, and cephalothin. 
B) Columbia agar base, 5% sheep red blood cells, erythromycin, spectinomycin, Diflucan, and ampicillin. 
C) Brucella agar base, 5% sheep red blood cells, Zithromax, sulfamethoxazole, nystatin, amphotericin B, and imipenem. 
D) Columbia agar base, glycerol, L-cysteine, hemin, streptomycin, amphotericin B, and gentamicin.

Question 6

What is the name of the organism that is strongly associated with gastric, peptic, and duodenal ulcers, as well as GI carcinoma?

Accepted Answer

A) Campylobacter jejuni 
B) Helicobacter pylori 
C) C.curvus 
D) H.rectus 
A) Campylobacter jejuni 
B) Helicobacter pylori 
C) C.curvus 
D) H.rectus

Question 7

Infections with Vibrio spp.can be contracted in all of the following situations except:

Accepted Answer

A) increased travel to either coastal or cholera-endemic areas. 
B) increased consumption of seafood (particularly uncooked). 
C) greater numbers of Vibrio spp.in the environment. 
D) increased use of recreational water facilities. 
A) increased travel to either coastal or cholera-endemic areas. 
B) increased consumption of seafood (particularly uncooked). 
C) greater numbers of Vibrio spp.in the environment. 
D) increased use of recreational water facilities.

Question 8

What type of an atmosphere do campylobacters require for growth?

Accepted Answer

A) Microaerophilic and capnophilic 
B) Anaerobic and moist 
C) Capnophilic and halophilic 
D) Microaerophilic and high nitrogen content 
A) Microaerophilic and capnophilic 
B) Anaerobic and moist 
C) Capnophilic and halophilic 
D) Microaerophilic and high nitrogen content

Question 9

What Vibrio species is most infrequently isolated in the laboratory?

Accepted Answer

A) Vibrio alginolyticus 
B) V.parahaemolyticus 
C) V.cholerae 
D) V.vulnificus 
A) Vibrio alginolyticus 
B) V.parahaemolyticus 
C) V.cholerae 
D) V.vulnificus

Question 10

All of the following characteristics describe the genus Plesiomonas except:

Accepted Answer

A) ferments glucose. 
B) motile. 
C) oxidase negative. 
D) facultative anaerobes. 
A) ferments glucose. 
B) motile. 
C) oxidase negative. 
D) facultative anaerobes.

Question 11

When collecting specimens that may contain Campylobacter spp.bacteria, what transport medium should they be placed in, if a delay in transport is possible?

Accepted Answer

A) Buffered glycerol-saline 
B) Regan-Lewis 
C) Aimes 
D) Cary-Blair 
A) Buffered glycerol-saline 
B) Regan-Lewis 
C) Aimes 
D) Cary-Blair

Question 12

What is the drug of choice for treating intestinal campylobacteriosis?

Accepted Answer

A) Erythromycin 
B) Gentamicin 
C) Vancomycin 
D) Imipenem 
A) Erythromycin 
B) Gentamicin 
C) Vancomycin 
D) Imipenem

Question 13

Plesiomonas spp.cause all of the following clinical types of gastroenteritis except:

Accepted Answer

A) the more common watery or secretory diarrhea. 
B) a second subacute or chronic disease that lasts between 14 days and 2 to 3 months. 
C) a more invasive, dysenteric form that resembles colitis. 
D) a hemorrhagic diarrhea. 
A) the more common watery or secretory diarrhea. 
B) a second subacute or chronic disease that lasts between 14 days and 2 to 3 months. 
C) a more invasive, dysenteric form that resembles colitis. 
D) a hemorrhagic diarrhea.

Question 14

What do aeromonad colonies look like on cefsulodin-irgasan-novobiocin (CIN) agar?

Accepted Answer

A) Purple colonies 
B) Clear colonies 
C) Green colonies 
D) Pink colonies 
A) Purple colonies 
B) Clear colonies 
C) Green colonies 
D) Pink colonies

Question 15

What organism has a microscopic morphology of tiny, curved, gram-negative rods, with S-shapes or seagull-wing shapes on Gram stain?

Accepted Answer

A) Helicobacter 
B) Campylobacter 
C) Haemophilus 
D) Acinetobacter 
A) Helicobacter 
B) Campylobacter 
C) Haemophilus 
D) Acinetobacter

Question 16

All of the following are biochemical characteristics of Vibrio spp.except:

Accepted Answer

A) ferments glucose. 
B) reduces nitrate to nitrite. 
C) halophilic. 
D) oxidase negative. 
A) ferments glucose. 
B) reduces nitrate to nitrite. 
C) halophilic. 
D) oxidase negative.

Question 17

A patient is brought to the emergency department with a severe case of gastroenteritis.The patient experienced gastrointestinal upset after eating raw oysters.What organism can be the culprit for this patient's condition?

Accepted Answer

A) Vibrio trota 
B) V.parahaemolyticus 
C) V.cholerae 
D) V.vulnificus 
A) Vibrio trota 
B) V.parahaemolyticus 
C) V.cholerae 
D) V.vulnificus

Question 18

How is cholera treated?

Accepted Answer

A) Tetracycline 
B) Copious amounts of intravenous fluids 
C) Aminoglycosides with a large amount of intravenous fluids 
D) Rest and cold showers 
A) Tetracycline 
B) Copious amounts of intravenous fluids 
C) Aminoglycosides with a large amount of intravenous fluids 
D) Rest and cold showers

Question 19

How is Helicobacter pylori presumptively identified?

Accepted Answer

A) A culture of a gastric biopsy 
B) A culture of gastric scrapings 
C) A rapid oxidase test done on gastric scrapings 
D) A rapid urease test done on a gastric biopsy 
A) A culture of a gastric biopsy 
B) A culture of gastric scrapings 
C) A rapid oxidase test done on gastric scrapings 
D) A rapid urease test done on a gastric biopsy

Question 20

What disease manifests in acute cases as a severe gastroenteritis, accompanied by vomiting followed by diarrheic stools that are described as rice water and occur 10 to 30 times a day?

Accepted Answer

A) Cholera 
B) Typhoid 
C) Dysentery 
D) Food poisoning 
A) Cholera 
B) Typhoid 
C) Dysentery 
D) Food poisoning

Exam 20: Vibrio, Aeromonas, Plesiomonas, and Campylobacter Species

Which of the following is a curved, gram-negative rod that grows on TCBS agar?

What organism is the most common cause of bacterial gastroenteritis worldwide?

Aeromonads are generally susceptible to all these antibiotics except:

Aeromonads have been implicated in all of the following diseases except:

Campy-BAP contains:

What is the name of the organism that is strongly associated with gastric, peptic, and duodenal ulcers, as well as GI carcinoma?

Infections with Vibrio spp.can be contracted in all of the following situations except:

What type of an atmosphere do campylobacters require for growth?

What Vibrio species is most infrequently isolated in the laboratory?

All of the following characteristics describe the genus Plesiomonas except:

When collecting specimens that may contain Campylobacter spp.bacteria, what transport medium should they be placed in, if a delay in transport is possible?

What is the drug of choice for treating intestinal campylobacteriosis?

Plesiomonas spp.cause all of the following clinical types of gastroenteritis except:

What do aeromonad colonies look like on cefsulodin-irgasan-novobiocin (CIN) agar?

What organism has a microscopic morphology of tiny, curved, gram-negative rods, with S-shapes or seagull-wing shapes on Gram stain?

All of the following are biochemical characteristics of Vibrio spp.except:

A patient is brought to the emergency department with a severe case of gastroenteritis.The patient experienced gastrointestinal upset after eating raw oysters.What organism can be the culprit for this patient's condition?

How is cholera treated?

How is Helicobacter pylori presumptively identified?

What disease manifests in acute cases as a severe gastroenteritis, accompanied by vomiting followed by diarrheic stools that are described as rice water and occur 10 to 30 times a day?

Bacterial Cell Structure, Physiology, Metabolism, and Genetics

Host-Parasite Interaction

The Laboratory Role in Infection Control

Control of Microorganisms

Performance Improvement in the Microbiology Laboratory

Specimen Collection and Processing

Microscopic Examination of Materials From Infected Sites

Use of Colony Morphology for the Presumptive Identification of Microorganisms

Biochemical Identification of Gram-Negative Bacteria

Immunodiagnosis of Infectious Diseases

Applications of Molecular Diagnostics

Antimicrobial Agent Mechanisms of Action and Resistance

Antimicrobial Susceptibility Testing

Staphylococci

Streptococcus, Enterococcus, and Other Catalase-Negative, Gram-Positive Cocci

Aerobic Gram-Positive Bacilli

Neisseria Species and Moraxella Catarrhalis

Haemophilus and Other Fastidious Gram-Negative Bacilli

Enterobacteriaceae

Nonfermenting and Miscellaneous Gram-Negative Bacilli

Anaerobes of Clinical Importance

The Spirochetes

Chlamydia, Rickettsia and Similar Organisms

Mycoplasma and Ureaplasma

Mycobacterium Tuberculosis and Nontuberculous Mycobacteria

Medically Significant Fungi

Diagnostic Parasitology

Clinical Virology

Agents of Bioterror and Forensic Microbiology

Biofilms: Architects of Disease

Upper and Lower Respiratory Tract Infections

Skin and Soft Tissue Infections

Gastrointestinal Infections and Food Poisoning

Infections of the Central Nervous System

Bacteremia and Sepsis

Urinary Tract Infections

Genital Infections and Sexually Transmitted Diseases

Infections in Special Populations

Zoonotic Diseases

Ocular Infections

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