Question 1

In Gram-stained preparations, Moraxella elongata appears as

Accepted Answer

A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods. 
A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods. E

Question 2

The species of Moraxella that is most commonly associated with human infections, primarily of the respiratory tract, is

Accepted Answer

A) Moraxella catarrhalis. 
B) Moraxella lacunata. 
C) Moraxella canis. 
D) Moraxella atlantae. 
A) Moraxella catarrhalis. 
B) Moraxella lacunata. 
C) Moraxella canis. 
D) Moraxella atlantae. A

Question 3

Differentiation of Moraxella lacunata from other Moraxella species can best be done by testing for

Accepted Answer

A) the ability to utilize acetate. 
B) the ability to liquefy serum. 
C) glucose utilization tests. 
D) growth on MacConkey agar. 
A) the ability to utilize acetate. 
B) the ability to liquefy serum. 
C) glucose utilization tests. 
D) growth on MacConkey agar. B

Question 4

Differentiation of Moraxella nonliquefaciens and M.osloensis can best be done by testing for

Accepted Answer

A) the ability to utilize acetate. 
B) the ability to liquefy serum. 
C) glucose utilization tests. 
D) growth on MacConkey agar. 
A) the ability to utilize acetate. 
B) the ability to liquefy serum. 
C) glucose utilization tests. 
D) growth on MacConkey agar.

Question 5

In Gram-stained preparations, Moraxella lincolnii will appear as

Accepted Answer

A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods. 
A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods.

Question 6

In Gram-stained preparations, Moraxella lacunata will appear as

Accepted Answer

A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods. 
A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods.

Question 7

Differentiation of Neisseria elongata subsp.glycolytica from other Moraxella species can best be done by testing for

Accepted Answer

A) the ability to utilize acetate. 
B) the ability to liquefy serum. 
C) glucose utilization tests. 
D) growth on MacConkey agar. 
A) the ability to utilize acetate. 
B) the ability to liquefy serum. 
C) glucose utilization tests. 
D) growth on MacConkey agar.

Question 8

True cocci, such as most Neisseria spp.and Moraxella (Branhamella) catarrhalis, can be differentiated from morphologically similar Moraxella species by

Accepted Answer

A) comparing the penicillin susceptibility testing results of the bacteria. 
B) subjecting the bacterium to noninhibitory concentrations of penicillin. 
C) the resistance of Moraxella to many beta-lactam antimicrobials. 
D) performing the DNA test. 
A) comparing the penicillin susceptibility testing results of the bacteria. 
B) subjecting the bacterium to noninhibitory concentrations of penicillin. 
C) the resistance of Moraxella to many beta-lactam antimicrobials. 
D) performing the DNA test.

Question 9

In Gram-stained preparations, Moraxella atlantae will appear as

Accepted Answer

A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods. 
A) either gram-negative coccobacilli or short, broad rods that tend to resist decolorization and may appear gram-variable. 
B) gram-negative cocci in pairs or short chains. 
C) coccobacilli or medium-sized rods. 
D) coccobacilli that may appear in chains. 
E) either coccobacilli or short, straight rods.

Exam 27: Moraxella

In Gram-stained preparations, Moraxella elongata appears as

The species of Moraxella that is most commonly associated with human infections, primarily of the respiratory tract, is

Differentiation of Moraxella lacunata from other Moraxella species can best be done by testing for

Differentiation of Moraxella nonliquefaciens and M.osloensis can best be done by testing for

In Gram-stained preparations, Moraxella lincolnii will appear as

In Gram-stained preparations, Moraxella lacunata will appear as

Differentiation of Neisseria elongata subsp.glycolytica from other Moraxella species can best be done by testing for

True cocci, such as most Neisseria spp.and Moraxella (Branhamella) catarrhalis, can be differentiated from morphologically similar Moraxella species by

In Gram-stained preparations, Moraxella atlantae will appear as

Microbial Taxonomy

Bacterial Genetics Metabolism and Structure

Host-Microorganism Interactions

Laboratory Safety

Specimen Management

Role of Microscopy

Traditional Cultivation and Identification

Nucleic Acid-Based Analytic Methods for Microbial Identification and Characterization

Immunochemical Methods Used for Organism Detection

Serologic Diagnosis of Infectious Diseases

Principles of Antimicrobial Action Resistance

Laboratory Methods and Strategies for Antimicrobial Susceptibility Testing

Staphylococcus, Micrococcus, and Similar Organisms

Streptococcus, Enterococcus, and Similar Organisms

Bacillus and Similar Organisms

Listeria, Corynebacterium, and Similar Organisms

Erysipelothirix, Lactobacillus, and Similar Organisms

Nocardia, Streptomyces, Rhodococcus, Oerskovia, and Similar Organisms

Enterobacteriaceae

Acinetobacter, Stenotrophomonas, and Other Organisms

Pseudomonas, Burkholderia, and Similar Organisms

Achromobacter, Rhizobium, Ochrobactrum, and Similar Organisms

Chryseobacterium, Sphingobacterium, and Similar Organisms

Alcaligenes, Bordetella Nonpertussis, Comamonas, and Similar Organisms

Vibrio, Aeromonas, Plesiomonas Shigelloides, and Chromobacterium Violaceum

Sphingomonas Paucimobilis and Similar Organisms

Eikenella Corrodens and Similar Organisms

Pasteurella and Similar Organisms

Actinobacillus, Kingella, Cardiobacterium, Capnocytophaga, and Similar Organisms

Haemophilus

Bartonella and Afipia

Campylobacter, Arcobacter, and Helicobacter

Legionella

Brucella

Bordetella Pertussis and Bordetella Parapertussis

Francisella

Streptobacillus Moniliformis and Spirillum Minus

Neisseria and Moraxella Catarrhalis

Overview and General Considerations

Laboratory Considerations

Mycobacteria

Obligate Intracellular and Nonculturable Bacterial Agents

Cell Wall-Deficient Bacteria: Mycoplasma and Ureaplasma

The Spirochetes

Laboratory Methods for Diagnosis of Parasitic Infections

Laboratory Methods in Basic Mycology

Laboratory Methods in Basic Virology

Bloodstream Infections

Infections of the Lower Respiratory Tract

Upper Respiratory Tract Infections and Other Infections of the Oral Cavity and Neck

Meningitis and Other Infections of the Central Nervous Systems

Infections of the Eyes, Ears, and Sinuses

Infections of the Urinary Tract

Genital Tract Infections

Gastrointestinal Tract Infections

Skin, Soft Tissue, and Wound Infections

Normally Sterile Body Fluids, Bone and Bone Marrow, and Solid Tissues

Laboratory Physical Design, Management, and Organization

Quality in the Clinical Microbiology Laboratory

Infection Control

Sentinel Laboratory Response to Bioterrorism New

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