Question 1

Testing for differentiation of Moraxella nonliquefaciens and M.osloensis can best be performed by:

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. A

Question 2

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

Accepted Answer

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

Question 3

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)  identifying the resistance of Moraxella to many beta-lactam antimicrobial agents. 
D)  performing the deoxyribonucleic acid (DN
A)  test. 
A)  comparing the penicillin susceptibility testing results of the bacteria. 
B)  subjecting the bacterium to noninhibitory concentrations of penicillin. 
C)  identifying the resistance of Moraxella to many beta-lactam antimicrobial agents. 
D)  performing the deoxyribonucleic acid (DN
A)  test. B

Question 4

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. 
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.

Question 5

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. 
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.

Question 6

The virulence of this organism(s), which is transmitted via a dog bite, is attributed to:

Accepted Answer

A)  protease production. 
B)  various toxins. 
C)  hemolysins. 
D)  something unknown. 
A)  protease production. 
B)  various toxins. 
C)  hemolysins. 
D)  something unknown.

Question 7

Which of the following tests can be performed to differentiate the two subspecies of Neisseria-elongata and glycolytica?

Accepted Answer

A)  Catalase 
B)  Nitrate reduction 
C)  DNase 
D)  Growth in nutrient broth 
A)  Catalase 
B)  Nitrate reduction 
C)  DNase 
D)  Growth in nutrient broth

Question 8

Which organism appears clear on MacConkey agar and resembles some colonies of the Enterobacteriaceae family?

Accepted Answer

A)  Moraxella lacunata 
B)  M. lincolnii 
C)  M. canis 
D)  M. nonliquefaciens 
A)  Moraxella lacunata 
B)  M. lincolnii 
C)  M. canis 
D)  M. nonliquefaciens

Question 9

Testing for differentiation of Moraxella lacunata from other Moraxella species can best be performed by:

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 10

Quality control should be performed on which two organisms to determine the validity of deoxyribonuclease (DNase)media?

Accepted Answer

A)  Moraxella atlantae and M. lacunata 
B)  M. lacunata and M. lincolnii 
C)  M. nonliquefaciens and M. canis 
D)  M. osloensis and M. lacunata 
A)  Moraxella atlantae and M. lacunata 
B)  M. lacunata and M. lincolnii 
C)  M. nonliquefaciens and M. canis 
D)  M. osloensis and M. lacunata

Exam 27: Moraxella and Related Organisms

Testing for differentiation of Moraxella nonliquefaciens and M.osloensis can best be performed by:

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

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:

In Gram-stained preparations, Moraxella lacunata will appear as:

The virulence of this organism(s), which is transmitted via a dog bite, is attributed to:

Which of the following tests can be performed to differentiate the two subspecies of Neisseria-elongata and glycolytica?

Which organism appears clear on MacConkey agar and resembles some colonies of the Enterobacteriaceae family?

Testing for differentiation of Moraxella lacunata from other Moraxella species can best be performed by:

Quality control should be performed on which two organisms to determine the validity of deoxyribonuclease (DNase)media?

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 and 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

Erysipelothrix Lactobacillus and Similar Organisms

Nocardia Streptomyces Rhodococcus and Similar Organisms

Enterobacteriaceae

Acinetobacter, Stenotrophomonas, and Other Organisms

Pseudomonas, Burkholderia, and Similar Organisms

Rhizobium, Ochrobactrum, and Similar Organisms

Chryseobacterium, Sphingobacterium, and Similar Organisms

Alcaligenes, Bordetella Nonpertussis, Comamonas, and Similar Organisms

Vibrio, Aeromonas, Chromobacterium, and Related Organisms

Sphingomonas Paucimobilis and Similar Organisms

Eikenella and Similar Organisms

Pasteurella and Similar Organisms

Actinobacillus, Aggregatibacter, Kingella, Cardiobacterium, Capnocytophaga, and Similar Organisms

Haemophilus

Bartonella and Afipia

Campylobacter, Arcobacter, and Helicobacter

Legionella

Brucella

Bordetella Pertussis, Bordetella Parapertussis, and Related Species

Francisella

Streptobacillus Moniliformis and Spirillum Minus

Neisseria and Moraxella Catarrhalis

Overview and General Considerations

Overview of Anaerobic Organisms

Mycobacteria

Obligate Intracellular and Non-culturable Bacterial Agents

Cell Walldeficient Bacteria: Mycoplasma and Ureaplasma

The Spirochetes

Laboratory Methods for Diagnosis of Parasitic Infections: Overview

Intestinal Protozoa

Blood and Tissue Protozoa

Other Protozoa

Intestinal Nematodes Roundworms

Tissue Nematodes Roundworms

Blood and Tissue Filarialnematodes

Intestinal Cestodes

Tissue Cestodes

Intestinal Trematodes

Liver and Lung Trematodes

Blood Trematodes

Overview of Fungal Identification Methods and Strategies

Hyaline Molds, Mucorales Zygomycetes, Dermatophytes, and Opportunitistic and Systemic Mycoses

Dematiaceous Melanizedmolds

Opportunistic Atypical Fungus: Pneumocystis Jiroveci

The Yeasts

Anti-fungal Susceptibility Testing, Therapy, and Prevention

Overview of the Methods and Strategies in Virology

Viruses in Human Disease

Antiviral Therapy, Susceptibility Testing, and Prevention

Bloodstream Infections

Infections of the Lower Respiratory Tract

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

Meningitis, Encephalitis, and Other Infections of the Central Nervous System