Question 1

Formaldehyde,as an antimicrobial agent,is used for:

Accepted Answer

A) food preservation 
B) to disinfect skin and inanimate objects 
C) to treat protozoan and fungal infections 
D) to inactivate viruses without destroying antigenic properties 
A) food preservation 
B) to disinfect skin and inanimate objects 
C) to treat protozoan and fungal infections 
D) to inactivate viruses without destroying antigenic properties

Question 2

Ionizing radiation:

Accepted Answer

A) consists of wavelengths between 400 and 390 nm 
B) oxidizes molecules such as riboflavin and porphyrins 
C) may be tuned to match the energy levels of water molecules 
D) dislodges electrons from atoms,creating ions 
A) consists of wavelengths between 400 and 390 nm 
B) oxidizes molecules such as riboflavin and porphyrins 
C) may be tuned to match the energy levels of water molecules 
D) dislodges electrons from atoms,creating ions

Question 3

Which is not a practical means of killing microorganisms or inhibiting the activity of microorganisms

Accepted Answer

A) Pasteurization 
B) Freeze-drying 
C) Ultrasonic waves 
D) Ultraviolet light 
A) Pasteurization 
B) Freeze-drying 
C) Ultrasonic waves 
D) Ultraviolet light

Question 4

Which of the following statements about detergents are true

Accepted Answer

A) Detergents act as chemical mutagens of DNA or RNA 
B) Germicidal soaps are just as effective disinfectants as surgical scrubs 
C) Cationic detergents are effective in killing endospores 
D) Anionic detergents used for laundering clothes are less effective than cationic detergents 
A) Detergents act as chemical mutagens of DNA or RNA 
B) Germicidal soaps are just as effective disinfectants as surgical scrubs 
C) Cationic detergents are effective in killing endospores 
D) Anionic detergents used for laundering clothes are less effective than cationic detergents

Question 5

When food is salted,water diffuses ________microorganisms,causing them to ____ and die.

Accepted Answer

A) into; shrink 
B) into; explode 
C) out of; shrink 
D) out of; explode 
A) into; shrink 
B) into; explode 
C) out of; shrink 
D) out of; explode

Question 6

Denaturation of proteins by antimicrobial agents _____.

Accepted Answer

A) prevents viruses from infecting host cells 
B) disrupts hydrogen and disulfide bonds 
C) aids in preserving the shape and function of proteins 
D) two of these 
A) prevents viruses from infecting host cells 
B) disrupts hydrogen and disulfide bonds 
C) aids in preserving the shape and function of proteins 
D) two of these

Question 7

What is the most susceptible phase of growth for most microorganisms by an antimicrobial agent

Accepted Answer

A) lag phase 
B) log phase 
C) stationary phase 
D) death phase 
A) lag phase 
B) log phase 
C) stationary phase 
D) death phase

Question 8

Which is NOT used to measure the effectiveness of an antimicrobial agent

Accepted Answer

A) Filter paper method 
B) Phenol coefficient method 
C) Use-dilution method 
D) Plate count method 
A) Filter paper method 
B) Phenol coefficient method 
C) Use-dilution method 
D) Plate count method

Question 9

Ultraviolet radiation:

Accepted Answer

A) is the same as X rays 
B) is the same as gamma rays 
C) penetrates glass,cloth,paper and most other materials 
D) kills microorganisms by damaging DNA and proteins 
A) is the same as X rays 
B) is the same as gamma rays 
C) penetrates glass,cloth,paper and most other materials 
D) kills microorganisms by damaging DNA and proteins

Question 10

Which of the following antimicrobial agents is NOT considered a halogen

Accepted Answer

A) Hypochlorous acid 
B) Copper sulfate 
C) Bromine 
D) Betadine 
A) Hypochlorous acid 
B) Copper sulfate 
C) Bromine 
D) Betadine

Formaldehyde,as an antimicrobial agent,is used for:

Ionizing radiation:

Which is not a practical means of killing microorganisms or inhibiting the activity of microorganisms

Which of the following statements about detergents are true

When food is salted,water diffuses ____microorganisms,causing them to and die.

Denaturation of proteins by antimicrobial agents _____.

What is the most susceptible phase of growth for most microorganisms by an antimicrobial agent

Which is NOT used to measure the effectiveness of an antimicrobial agent

Ultraviolet radiation:

Which of the following antimicrobial agents is NOT considered a halogen

Scope and History of Microbiology

The Microbiome

Fundamentals of Chemistry

Microscopy and Staining

Characteristics of Prokaryotic and Eukaryotic Cells

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: The Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Basic Principles of Adaptive Immunity and Immunization

Immune Disorders

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, Lymphatic, and Systemic Diseases

Diseases of the Nervous System

Environmental Microbiology

Applied Microbiology

Filters

Exam 13: Sterilization and Disinfection

Formaldehyde,as an antimicrobial agent,is used for:

Ionizing radiation:

Which is not a practical means of killing microorganisms or inhibiting the activity of microorganisms

Which of the following statements about detergents are true

When food is salted,water diffuses ________microorganisms,causing them to ____ and die.

Denaturation of proteins by antimicrobial agents _____.

What is the most susceptible phase of growth for most microorganisms by an antimicrobial agent

Which is NOT used to measure the effectiveness of an antimicrobial agent

Ultraviolet radiation:

Which of the following antimicrobial agents is NOT considered a halogen

Scope and History of Microbiology

The Microbiome

Fundamentals of Chemistry

Microscopy and Staining

Characteristics of Prokaryotic and Eukaryotic Cells

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: The Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Basic Principles of Adaptive Immunity and Immunization

Immune Disorders

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, Lymphatic, and Systemic Diseases

Diseases of the Nervous System

Environmental Microbiology

Applied Microbiology

Filters

When food is salted,water diffuses ____microorganisms,causing them to and die.