Question 1

What is the name of the organism that causes tularemia, which can be contracted from rabbits?

Accepted Answer

A)  Brucella tularensis 
B)  B. hareis 
C)  Francisella tularensis 
D)  F. philomiragia 
A)  Brucella tularensis 
B)  B. hareis 
C)  Francisella tularensis 
D)  F. philomiragia

Question 2

Which species of Haemophilus requires both X and V factors?

Accepted Answer

A)  H. parainfluenzae 
B)  H. parahemolyticus 
C)  H. influenzae 
D)  H. paraphrophilus 
A)  H. parainfluenzae 
B)  H. parahemolyticus 
C)  H. influenzae 
D)  H. paraphrophilus

Question 3

What Haemophilus species is called the Koch-Weeks bacillus?

Accepted Answer

A)  H. influenzae 
B)  H. parainfluenzae 
C)  H. aegyptius 
D)  H. aphrophilus 
A)  H. influenzae 
B)  H. parainfluenzae 
C)  H. aegyptius 
D)  H. aphrophilus

Question 4

A microbiologist is reading a sputum culture and notices that there is no growth on the sheep blood and MacConkey (MAC) agar plates, but there is heavy growth on the chocolate plate. The colonies on the plate are translucent, moist, smooth, and convex, with a mousy odor. What is the most likely identification of the organism?

Accepted Answer

A)  Haemophilus parainfluenzae 
B)  H. influenzae 
C)  H. aegyptius 
D)  H. ducreyi 
A)  Haemophilus parainfluenzae 
B)  H. influenzae 
C)  H. aegyptius 
D)  H. ducreyi

Question 5

What is the specimen of choice for Bordetella pertussis?

Accepted Answer

A)  Throat cultures 
B)  Sputum specimens 
C)  Bronchial aspirations 
D)  Nasopharyngeal swabs 
A)  Throat cultures 
B)  Sputum specimens 
C)  Bronchial aspirations 
D)  Nasopharyngeal swabs

Question 6

How is pertussis spread?

Accepted Answer

A)  Fomites 
B)  Contaminated food 
C)  Respiratory droplet 
D)  Airborne 
A)  Fomites 
B)  Contaminated food 
C)  Respiratory droplet 
D)  Airborne

Question 7

A technician is working the night shift and receives a CSF specimen on an infant. The technician makes a Gram stain of the spinal fluid, then reads the smear under the microscope. The report the technician sends to the physician reads as follows: "gram-negative bacillus, small and pleomorphic." What bacteria are being implied as the infecting agent?

Accepted Answer

A)  Escherichia coli 
B)  Legionella pneumophila 
C)  Staphylococcus aureus 
D)  Haemophilus influenzae 
A)  Escherichia coli 
B)  Legionella pneumophila 
C)  Staphylococcus aureus 
D)  Haemophilus influenzae

Question 8

What medium is used to isolate Legionella?

Accepted Answer

A)  MAC 
B)  Buffered charcoal yeast extract (BCY
E)  
C)  Chocolate 
D)  Bordet-Gengou 
A)  MAC 
B)  Buffered charcoal yeast extract (BCY
E)  
C)  Chocolate 
D)  Bordet-Gengou

Question 9

All of the following are characteristics of Haemophilus spp., except

Accepted Answer

A)  gram-positive cocci. 
B)  facultative anaerobes. 
C)  oxidase positive. 
D)  catalase positive. 
A)  gram-positive cocci. 
B)  facultative anaerobes. 
C)  oxidase positive. 
D)  catalase positive.

Question 10

All of the following are normal inhabitants of the human oral cavity, except

Accepted Answer

A)  Capnocytophaga fusofurium. 
B)  Capnocytophaga gingivalis. 
C)  Capnocytophaga ochracea. 
D)  Capnocytophaga haemolyticus. 
A)  Capnocytophaga fusofurium. 
B)  Capnocytophaga gingivalis. 
C)  Capnocytophaga ochracea. 
D)  Capnocytophaga haemolyticus.

Question 11

All of the following are rapid methods used to definitively identify Legionella species, except

Accepted Answer

A)  direct fluorescent antibody (DF
A) . 
B)  DNA detection. 
C)  indirect immunofluorescence. 
D)  urine antigen testing. 
A)  direct fluorescent antibody (DF
A) . 
B)  DNA detection. 
C)  indirect immunofluorescence. 
D)  urine antigen testing.

Question 12

The HACEK group includes all of the following, except

Accepted Answer

A)  Haemophilus spp. 
B)  Aggregatibacter actinomycetemcomitans. 
C)  Kingella spp. 
D)  Clostridium difficile. 
A)  Haemophilus spp. 
B)  Aggregatibacter actinomycetemcomitans. 
C)  Kingella spp. 
D)  Clostridium difficile.

Question 13

What organism causes the disease called whooping cough?

Accepted Answer

A)  Bordetella pertussis 
B)  Legionella pneumoniae 
C)  Capnocytophagia gingivalis 
D)  Legionella micdadei 
A)  Bordetella pertussis 
B)  Legionella pneumoniae 
C)  Capnocytophagia gingivalis 
D)  Legionella micdadei

Exam 18: Haemophilus, Hacek, Legionella, and Other Fastidious Gram-Negative Bacilli

What is the name of the organism that causes tularemia, which can be contracted from rabbits?

Which species of Haemophilus requires both X and V factors?

What Haemophilus species is called the Koch-Weeks bacillus?

What is the specimen of choice for Bordetella pertussis?

How is pertussis spread?

What medium is used to isolate Legionella?

All of the following are characteristics of Haemophilus spp., except

All of the following are normal inhabitants of the human oral cavity, except

All of the following are rapid methods used to definitively identify Legionella species, except

The HACEK group includes all of the following, except

What organism causes the disease called whooping cough?

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

Enterobacteriaceae

Vibrio, Aeromonas, and Campylobacter Species

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 Infections

Infections in Special Populations

Zoonotic Diseases

Ocular Infections

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