Question 1

Media that have dyes,antibiotics,or other chemical compounds added to inhibit certain bacteria while allowing others to grow is called ____ media.

Accepted Answer

A)  enrichment 
B)  supportive 
C)  selective 
D)  differential 
A)  enrichment 
B)  supportive 
C)  selective 
D)  differential

Question 2

Interpret the following Gram stain of urethral discharge from a male:
Many polymorphonuclear leukocytes (PMNs)
Few gram-negative intracellular diplococci

Accepted Answer

Neisseria gonorrhoeae
 Gram-stained smea

Question 3

Which of the following tests identifies Staphylococcus aureus?

Accepted Answer

A)  PYR and catalase 
B)  Catalase and coagulase 
C)  Bile solubility and optochin 
D)  Indole and oxidase 
A)  PYR and catalase 
B)  Catalase and coagulase 
C)  Bile solubility and optochin 
D)  Indole and oxidase

Question 4

Which of the following methods is appropriate to collect blood for culture?

Accepted Answer

A)  Cleaning the venipuncture site with 70% alcohol 
B)  Cleaning the venipuncture site with 70% alcohol, followed by povidone-iodine, at the intended venipuncture site 
C)  Cleaning the venipuncture site with 70% alcohol, followed by povidone-iodine, moving in a circular motion beginning at the periphery of the area to be cleaned inward toward the venipuncture site 
D)  All of the above 
A)  Cleaning the venipuncture site with 70% alcohol 
B)  Cleaning the venipuncture site with 70% alcohol, followed by povidone-iodine, at the intended venipuncture site 
C)  Cleaning the venipuncture site with 70% alcohol, followed by povidone-iodine, moving in a circular motion beginning at the periphery of the area to be cleaned inward toward the venipuncture site 
D)  All of the above

Question 5

Which of the following systematic designations is correct?

Accepted Answer

A)  
  
B)  
  
C)  
  
D)  
  
A)  
  
B)  
  
C)  
  
D)

Question 6

How do you interpret no zone of inhibition around an antibiotic disk in the disk diffusion method?

Accepted Answer

A)  Susceptible 
B)  Resistant 
C)  Intermediate 
D)  Repeat testing; there should always be a zone of inhibition. 
A)  Susceptible 
B)  Resistant 
C)  Intermediate 
D)  Repeat testing; there should always be a zone of inhibition.

Question 7

Rapid screening of throat specimens (nonculture method)is done to detect which of the following pathogens?

Accepted Answer

A)  Streptococcus pneumoniae 
B)  Escherichia coli 
C)  Group A b-hemolytic Streptococcus 
D)  Staphylococcus aureus 
A)  Streptococcus pneumoniae 
B)  Escherichia coli 
C)  Group A b-hemolytic Streptococcus 
D)  Staphylococcus aureus

Question 8

Which of the following bacteremias can result from possible wound abscesses and are present for a time in the blood,followed by a period with no bacteria?

Accepted Answer

A)  Intermittent bacteremia 
B)  Transient bacteremia 
C)  Septicemia 
D)  Continuous bacteremia 
A)  Intermittent bacteremia 
B)  Transient bacteremia 
C)  Septicemia 
D)  Continuous bacteremia

Question 9

Which of the following procedures can identify Candida albicans?

Accepted Answer

A)  India ink stain 
B)  Germ-tube test 
C)  Gram stain 
D)  Acid-fast stain 
A)  India ink stain 
B)  Germ-tube test 
C)  Gram stain 
D)  Acid-fast stain

Question 10

Why do gram-positive bacterial cells retain the crystal violet-iodine complex when the decolorizer is added?

Accepted Answer

A)  Gram-positive cells have an outer membrane that traps the complex. 
B)  Gram-positive bacterial cells have a thinner peptidoglycan layer with teichoic acid cross-linkages. 
C)  Gram-positive bacterial cells have a thicker peptidoglycan layer with teichoic acid cross-linkages. 
D)  Gram-positive bacterial cells have a thick capsule layer that traps the complex. 
A)  Gram-positive cells have an outer membrane that traps the complex. 
B)  Gram-positive bacterial cells have a thinner peptidoglycan layer with teichoic acid cross-linkages. 
C)  Gram-positive bacterial cells have a thicker peptidoglycan layer with teichoic acid cross-linkages. 
D)  Gram-positive bacterial cells have a thick capsule layer that traps the complex.

Media that have dyes,antibiotics,or other chemical compounds added to inhibit certain bacteria while allowing others to grow is called ____ media.

Interpret the following Gram stain of urethral discharge from a male: Many polymorphonuclear leukocytes (PMNs) Few gram-negative intracellular diplococci

Which of the following tests identifies Staphylococcus aureus?

Which of the following methods is appropriate to collect blood for culture?

Which of the following systematic designations is correct?

How do you interpret no zone of inhibition around an antibiotic disk in the disk diffusion method?

Rapid screening of throat specimens (nonculture method)is done to detect which of the following pathogens?

Which of the following bacteremias can result from possible wound abscesses and are present for a time in the blood,followed by a period with no bacteria?

Which of the following procedures can identify Candida albicans?

Why do gram-positive bacterial cells retain the crystal violet-iodine complex when the decolorizer is added?

Fundamentals of the Clinical Laboratory

Safety in the Clinical Laboratory

Quality Assessment and Quality Control in the Clinical Laboratory

Phlebotomy: Collecting and Processing Blood

The Microscope

Systems of Measurement, laboratory Equipment, and Reagents

Laboratory Mathematics and Solution Preparation

Basic and New Techniques in the Clinical Laboratory

Delivery of Laboratory Testing From Point of Care to Total Automation

Introduction to Clinical Chemistry

Principles and Practice of Clinical Hematology

Introduction to Hemostasis

Renal Physiology and Urinalysis

Examination of Body Fluids and Miscellaneous Specimens

Immunology and Serology

Immunohematology and Transfusion Medicine

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Exam 15: Introduction to Microbiology

Media that have dyes,antibiotics,or other chemical compounds added to inhibit certain bacteria while allowing others to grow is called ____ media.

Interpret the following Gram stain of urethral discharge from a male: Many polymorphonuclear leukocytes (PMNs) Few gram-negative intracellular diplococci

Which of the following tests identifies Staphylococcus aureus?

Which of the following methods is appropriate to collect blood for culture?

Which of the following systematic designations is correct?

How do you interpret no zone of inhibition around an antibiotic disk in the disk diffusion method?

Rapid screening of throat specimens (nonculture method)is done to detect which of the following pathogens?

Which of the following bacteremias can result from possible wound abscesses and are present for a time in the blood,followed by a period with no bacteria?

Which of the following procedures can identify Candida albicans?

Why do gram-positive bacterial cells retain the crystal violet-iodine complex when the decolorizer is added?

Fundamentals of the Clinical Laboratory

Safety in the Clinical Laboratory

Quality Assessment and Quality Control in the Clinical Laboratory

Phlebotomy: Collecting and Processing Blood

The Microscope

Systems of Measurement, laboratory Equipment, and Reagents

Laboratory Mathematics and Solution Preparation

Basic and New Techniques in the Clinical Laboratory

Delivery of Laboratory Testing From Point of Care to Total Automation

Introduction to Clinical Chemistry

Principles and Practice of Clinical Hematology

Introduction to Hemostasis

Renal Physiology and Urinalysis

Examination of Body Fluids and Miscellaneous Specimens

Immunology and Serology

Immunohematology and Transfusion Medicine

Filters