Question 1

What organism is associated with pneumonia in patients with cystic fibrosis or chronic granulomatous disease (CGD)?

Accepted Answer

A)  Stenotrophomonas maltophilia 
B)  Pseudomonas putida 
C)  Pseudomonas fluorescens 
D)  Burkholderia cepacia 
A)  Stenotrophomonas maltophilia 
B)  Pseudomonas putida 
C)  Pseudomonas fluorescens 
D)  Burkholderia cepacia D

Question 2

Which of the following is a virulence factor of Pseudomonas aeruginosa?

Accepted Answer

A)  Endotoxin 
B)  Exotoxins 
C)  Capsule 
D)  All of the above 
A)  Endotoxin 
B)  Exotoxins 
C)  Capsule 
D)  All of the above D

Question 3

An H2S-positive, oxidase-positive, nonfermenter describes

Accepted Answer

A)  Acinetobacter spp. 
B)  Pseudomonas aeruginosa. 
C)  Shewanella. 
D)  Sphingomonas. 
A)  Acinetobacter spp. 
B)  Pseudomonas aeruginosa. 
C)  Shewanella. 
D)  Sphingomonas. C

Question 4

What substances do nonfermenters fail to ferment in traditional media?

Accepted Answer

A)  Lipids 
B)  Carbohydrates 
C)  Proteins 
D)  Alkaloids 
A)  Lipids 
B)  Carbohydrates 
C)  Proteins 
D)  Alkaloids

Question 5

What is the most common member of the genus Moraxella isolated in the clinical laboratory?

Accepted Answer

A)  M. nonliquefaciens 
B)  M. osloensis 
C)  M. lacunata 
D)  M. catarrhalis 
A)  M. nonliquefaciens 
B)  M. osloensis 
C)  M. lacunata 
D)  M. catarrhalis

Question 6

Which gram-negative coccobacilli can appear as gram-positive cocci in smears made from blood culture bottles?

Accepted Answer

A)  Pseudomonas putida 
B)  Acinetobacter spp. 
C)  Haemophilus 
D)  Alcaligenes spp. 
A)  Pseudomonas putida 
B)  Acinetobacter spp. 
C)  Haemophilus 
D)  Alcaligenes spp.

Question 7

All of the following are poor prognostic factors associated with Pseudomonas aeruginosa bacteremia, except

Accepted Answer

A)  Septic shock. 
B)  Granulocytopenia. 
C)  Septic metastatic lesions. 
D)  Anemia. 
A)  Septic shock. 
B)  Granulocytopenia. 
C)  Septic metastatic lesions. 
D)  Anemia.

Question 8

A microbiologist is reading the plates from a sputum culture. The culture is from a patient with cystic fibrosis. One organism dominates the blood agar, chocolate, and MacConkey plates. The MacConkey plate shows an organism with a green pigment and a metallic sheen. The probable identification for this organism is

Accepted Answer

A)  Pseudomonas aeruginosa. 
B)  Serratia marcescens. 
C)  Chromobacterium violaceum. 
D)  Prevotella melaninogenica. 
A)  Pseudomonas aeruginosa. 
B)  Serratia marcescens. 
C)  Chromobacterium violaceum. 
D)  Prevotella melaninogenica.

Question 9

Characteristics of most members of the family Flavobacteriaceae

Accepted Answer

A)  weak fermenters. 
B)  cause of nosocomial infections. 
C)  ubiquitous in soil and water. 
D)  All the above 
A)  weak fermenters. 
B)  cause of nosocomial infections. 
C)  ubiquitous in soil and water. 
D)  All the above

Question 10

What is the causative agent of glanders?

Accepted Answer

A)  Burkholderia cepacia 
B)  B. gladioli 
C)  B. mallei 
D)  Stenotrophomonas maltophilia 
A)  Burkholderia cepacia 
B)  B. gladioli 
C)  B. mallei 
D)  Stenotrophomonas maltophilia

Question 11

What organism is a common cause of pulmonary disease among individuals with cystic fibrosis?

Accepted Answer

A)  Pseudomonas fluorescens 
B)  P. aeruginosa 
C)  P. putida 
D)  P. mendocina 
A)  Pseudomonas fluorescens 
B)  P. aeruginosa 
C)  P. putida 
D)  P. mendocina

Question 12

What nonfermenter may produce a weak, slow, positive oxidase reaction?

Accepted Answer

A)  Burkholderia cepacia 
B)  Pseudomonas putida 
C)  Stenotrophomonas maltophilia 
D)  P. stutzeri 
A)  Burkholderia cepacia 
B)  Pseudomonas putida 
C)  Stenotrophomonas maltophilia 
D)  P. stutzeri

Question 13

Which plant pathogen may be mistaken for Burkholderia cepacia?

Accepted Answer

A)  Pseudomonas putida 
B)  Burkholderia gladioli 
C)  Stenotrophomonas maltophilia 
D)  P. stutzeri 
A)  Pseudomonas putida 
B)  Burkholderia gladioli 
C)  Stenotrophomonas maltophilia 
D)  P. stutzeri

Question 14

Characteristics of Moraxella include

Accepted Answer

A)  oxidase-positive and nonmotile. 
B)  biochemically inert and aerobic. 
C)  susceptible to penicillin and opportunistic pathogens. 
D)  All of the above 
A)  oxidase-positive and nonmotile. 
B)  biochemically inert and aerobic. 
C)  susceptible to penicillin and opportunistic pathogens. 
D)  All of the above

Question 15

The three nonfermenters that make up the majority of isolates routinely seen in clinical laboratories include all the following, except

Accepted Answer

A)  Pseudomonas aeruginosa. 
B)  Acinetobacter spp. 
C)  Stenotrophomonas maltophilia. 
D)  Pseudomonas putida. 
A)  Pseudomonas aeruginosa. 
B)  Acinetobacter spp. 
C)  Stenotrophomonas maltophilia. 
D)  Pseudomonas putida.

Question 16

This bacterium is said to have a fruity or grapelike smell.

Accepted Answer

A)  Staphylococcus aureus 
B)  Proteus mirabilis 
C)  Pseudomonas aeruginosa 
D)  Nocardia sp. 
A)  Staphylococcus aureus 
B)  Proteus mirabilis 
C)  Pseudomonas aeruginosa 
D)  Nocardia sp.

Question 17

What Pseudomonas sp. is the nonfermenter that is the leading cause of nosocomial pneumonia and bacteremia?

Accepted Answer

A)  Pseudomonas aeruginosa 
B)  P. fluorescens 
C)  P. putida 
D)  P. mendocina 
A)  Pseudomonas aeruginosa 
B)  P. fluorescens 
C)  P. putida 
D)  P. mendocina

Question 18

Members of the Alcaligenes are usually susceptible to all the following antimicrobial agents, except

Accepted Answer

A)  aminoglycosides. 
B)  ceftazidime. 
C)  SXT. 
D)  piperacillin. 
A)  aminoglycosides. 
B)  ceftazidime. 
C)  SXT. 
D)  piperacillin.

Question 19

Elizabethkingae meningosepticum causes all the following diseases, except

Accepted Answer

A)  pneumonia. 
B)  gastroenteritis. 
C)  endocarditis. 
D)  meningitis. 
A)  pneumonia. 
B)  gastroenteritis. 
C)  endocarditis. 
D)  meningitis.

Question 20

An oxidase-positive, nonfermentative gram-negative bacillus that characteristically produces dry, wrinkled colonies describes

Accepted Answer

A)  Pseudomonas stutzeri. 
B)  Pseudomonas luteola. 
C)  Pseudomonas mendocina. 
D)  Pseudomonas putida. 
A)  Pseudomonas stutzeri. 
B)  Pseudomonas luteola. 
C)  Pseudomonas mendocina. 
D)  Pseudomonas putida.

Exam 21: Nonfermenting and Miscellaneous Gram-Negative Bacilli

What organism is associated with pneumonia in patients with cystic fibrosis or chronic granulomatous disease (CGD)?

Which of the following is a virulence factor of Pseudomonas aeruginosa?

An H2S-positive, oxidase-positive, nonfermenter describes

What substances do nonfermenters fail to ferment in traditional media?

What is the most common member of the genus Moraxella isolated in the clinical laboratory?

Which gram-negative coccobacilli can appear as gram-positive cocci in smears made from blood culture bottles?

All of the following are poor prognostic factors associated with Pseudomonas aeruginosa bacteremia, except

Characteristics of most members of the family Flavobacteriaceae

What is the causative agent of glanders?

What organism is a common cause of pulmonary disease among individuals with cystic fibrosis?

What nonfermenter may produce a weak, slow, positive oxidase reaction?

Which plant pathogen may be mistaken for Burkholderia cepacia?

Characteristics of Moraxella include

The three nonfermenters that make up the majority of isolates routinely seen in clinical laboratories include all the following, except

This bacterium is said to have a fruity or grapelike smell.

What Pseudomonas sp. is the nonfermenter that is the leading cause of nosocomial pneumonia and bacteremia?

Members of the Alcaligenes are usually susceptible to all the following antimicrobial agents, except

Elizabethkingae meningosepticum causes all the following diseases, except

An oxidase-positive, nonfermentative gram-negative bacillus that characteristically produces dry, wrinkled colonies describes

Bacterial Cell Structure, Physiology, Metabolism, and Genetics

Hostparasite 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 Mechanisms

Antimicrobial Susceptibility Testing

Staphylococci

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

Aerobic Gram-Positive Bacilli

Neisseria Species and Moraxella Catarrhalis

Haemophilus, Hacek, Legionella, and Other Fastidious Gram-Negative Bacilli

Enterobacteriaceae

Vibrio, Aeromonas, and Campylobacter Species

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 Infections

Infections in Special Populations

Zoonotic Diseases

Ocular Infections

Filters

An H₂S-positive, oxidase-positive, nonfermenter describes