Question 1

A zone of inhibition is

Accepted Answer

A)  the area on the agar plate where the drug no longer diffuses into the agar. 
B)  the area around the antibiotic disk where the bacteria cannot grow. 
C)  the zone around the edge of the plate where the streaking does not cover the agar and bacterial growth is inhibited. 
D)  All of the above 
A)  the area on the agar plate where the drug no longer diffuses into the agar. 
B)  the area around the antibiotic disk where the bacteria cannot grow. 
C)  the zone around the edge of the plate where the streaking does not cover the agar and bacterial growth is inhibited. 
D)  All of the above

Question 2

In terms of MIC microdilution trays, a skipped well occurs

Accepted Answer

A)  when a well on the tray is skipped with inoculum and it does not grow. 
B)  when the inoculator is turned around and the sterility well is accidentally inoculated and the growth well is accidentally skipped. 
C)  when there is growth at higher concentrations and no growth at one or more of the lower concentration wells. 
D)  None of the above 
A)  when a well on the tray is skipped with inoculum and it does not grow. 
B)  when the inoculator is turned around and the sterility well is accidentally inoculated and the growth well is accidentally skipped. 
C)  when there is growth at higher concentrations and no growth at one or more of the lower concentration wells. 
D)  None of the above

Question 3

What principle does the MicroScan Walkaway SI use to determine antimicrobial susceptibility?

Accepted Answer

A)  Redox indicator system 
B)  Turbidimetry 
C)  Hydrolysis of a bioluminescent substrate 
D)  Carbon dioxide concentration 
A)  Redox indicator system 
B)  Turbidimetry 
C)  Hydrolysis of a bioluminescent substrate 
D)  Carbon dioxide concentration

Exam 13: Antimicrobial Susceptibility Testing

A zone of inhibition is

In terms of MIC microdilution trays, a skipped well occurs

What principle does the MicroScan Walkaway SI use to determine antimicrobial susceptibility?

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

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

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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