Question 1

All of the following are examples of general types of electromagnetic radiation except:

Accepted Answer

A) ultraviolet light 
B) ionization 
C) microwaves 
D) ultrasonic waves 
A) ultraviolet light 
B) ionization 
C) microwaves 
D) ultrasonic waves D

Question 2

Lyophilization is:

Accepted Answer

A) freeze-drying 
B) refrigeration 
C) freezing 
D) heat-drying 
A) freeze-drying 
B) refrigeration 
C) freezing 
D) heat-drying A

Question 3

Sterilization is the:

Accepted Answer

A) killing or removal of all microorganisms in a material or an object. 
B) reduction of the number of pathogenic microorganisms in a material or object. 
C) killing or removal of some but not all microorganisms. 
D) disinfection of living tissue. 
A) killing or removal of all microorganisms in a material or an object. 
B) reduction of the number of pathogenic microorganisms in a material or object. 
C) killing or removal of some but not all microorganisms. 
D) disinfection of living tissue. A

Question 4

Which of the following do NOT affect viruses

Accepted Answer

A) Alkylating agents 
B) Detergents 
C) Alcohols 
D) Heavy Metals 
A) Alkylating agents 
B) Detergents 
C) Alcohols 
D) Heavy Metals

Question 5

Dyes that are used as antimicrobial agents function by:

Accepted Answer

A) disrupting disulfide bonds. 
B) interfering with replication or blocking cell wall synthesis. 
C) denaturing proteins by mixing with water. 
D) oxidizing cellular components. 
A) disrupting disulfide bonds. 
B) interfering with replication or blocking cell wall synthesis. 
C) denaturing proteins by mixing with water. 
D) oxidizing cellular components.

Question 6

Microwave radiation:

Accepted Answer

A) damages DNA by ionizing radiation. 
B) destroys bacterial endospores. 
C) produces peroxides,which oxidize molecules. 
D) when tuned to energy levels of water releases the energy as heat. 
A) damages DNA by ionizing radiation. 
B) destroys bacterial endospores. 
C) produces peroxides,which oxidize molecules. 
D) when tuned to energy levels of water releases the energy as heat.

Question 7

Dry heat does most of its damage against microorganisms by _____.

Accepted Answer

A) disrupting membrane lipids 
B) disrupting hydrogen bonds 
C) oxidizing molecules 
D) denaturing proteins 
A) disrupting membrane lipids 
B) disrupting hydrogen bonds 
C) oxidizing molecules 
D) denaturing proteins

Question 8

Which sterilization technique would you use on pharmaceutical products

Accepted Answer

A) Autoclaving 
B) Ionizing radiation 
C) Ultrasonic waves 
D) Detergent 
A) Autoclaving 
B) Ionizing radiation 
C) Ultrasonic waves 
D) Detergent

Question 9

Which does NOT pertain to pasteurization

Accepted Answer

A) Can be done with ultrahigh temperatures 
B) Invented by Louis Pasteur 
C) Achieves sterility 
D) Destroys organisms that caused wine to sour 
A) Can be done with ultrahigh temperatures 
B) Invented by Louis Pasteur 
C) Achieves sterility 
D) Destroys organisms that caused wine to sour

Question 10

Which of the following is not an example of an alkylating agent that disrupts proteins and nucleic acids

Accepted Answer

A) Glutaraldahyde 
B) β-propiolactone 
C) Ethylene oxide 
D) Methylene oxide 
A) Glutaraldahyde 
B) β-propiolactone 
C) Ethylene oxide 
D) Methylene oxide

Question 11

All of the following apply to the control of microbial growth EXCEPT:

Accepted Answer

A) a definite proportion of organisms die within a given time interval. 
B) the fewer organisms present,the shorter the time needed for sterility. 
C) microorganisms differ in their susceptibility to antimicrobial agents. 
D) heat is not considered an antimicrobial agent. 
A) a definite proportion of organisms die within a given time interval. 
B) the fewer organisms present,the shorter the time needed for sterility. 
C) microorganisms differ in their susceptibility to antimicrobial agents. 
D) heat is not considered an antimicrobial agent.

Question 12

All of the following pertain to sonic or ultrasonic waves and their properties,EXCEPT:

Accepted Answer

A) are sound waves in the audible range 
B) may cause cavitation - partial vacuum in a liquid 
C) are a practical means of sterilization 
D) are a useful means of fragmenting cells to study membranes,ribosomes or enzymes 
A) are sound waves in the audible range 
B) may cause cavitation - partial vacuum in a liquid 
C) are a practical means of sterilization 
D) are a useful means of fragmenting cells to study membranes,ribosomes or enzymes

Question 13

Alcohols:

Accepted Answer

A) oxidize disulfide bonds 
B) dissolve lipids and denature proteins 
C) alter nucleic acids 
D) lower the pH 
A) oxidize disulfide bonds 
B) dissolve lipids and denature proteins 
C) alter nucleic acids 
D) lower the pH

Question 14

All of the following qualities apply to the selection of an ideal antiseptic EXCEPT:

Accepted Answer

A) fast acting 
B) effective against all infective agents without harming host tissue 
C) no offensive odor 
D) expensive and difficult to obtain and use 
A) fast acting 
B) effective against all infective agents without harming host tissue 
C) no offensive odor 
D) expensive and difficult to obtain and use

Question 15

An agent that inhibits the growth of bacteria is called a/an:

Accepted Answer

A) antiseptic 
B) bactericide 
C) bacteriostatic agent 
D) sanitizer 
A) antiseptic 
B) bactericide 
C) bacteriostatic agent 
D) sanitizer

Question 16

Which of the following statements about evaluating the effectiveness of chemical agents is false

Accepted Answer

A) Phenol coefficient can be used to evaluate the efficacy of phenol derivatives. 
B) Materials present can complex with or inactivate a chemical agent during the phenol coefficient test. 
C) In the filter paper test,a clear area around the disk indicates a prevention of microorganism growth but not killing of microbes. 
D) The use-dilution test is considered to be more meaningful than the phenol coefficient. 
A) Phenol coefficient can be used to evaluate the efficacy of phenol derivatives. 
B) Materials present can complex with or inactivate a chemical agent during the phenol coefficient test. 
C) In the filter paper test,a clear area around the disk indicates a prevention of microorganism growth but not killing of microbes. 
D) The use-dilution test is considered to be more meaningful than the phenol coefficient.

Question 17

Which of the following involves sterilization by heating steam in a jacket and subsequent entrance of the steam into a sterilization chamber,where materials and substances to be sterilized are placed in a/an:

Accepted Answer

A) autoclave 
B) pasteurization chamber 
C) dry heat oven 
D) open flame 
A) autoclave 
B) pasteurization chamber 
C) dry heat oven 
D) open flame

Question 18

Dry heat changes the structure of _______ through the process of _____.

Accepted Answer

A) lipids; dehydration 
B) lipids; denaturation 
C) proteins; oxidation 
D) proteins; dehydration 
A) lipids; dehydration 
B) lipids; denaturation 
C) proteins; oxidation 
D) proteins; dehydration

Question 19

Ultrahigh temperature (UHT)processing does not involve:

Accepted Answer

A) treating small containers of coffee creamer 
B) using a complex cooling procedure 
C) raising temperature from 74°C to 140°C and dropping it back to 74°C within 5 seconds 
D) presence of a "cooked" flavor in milk flavored with vanilla,strawberry or chocolate 
A) treating small containers of coffee creamer 
B) using a complex cooling procedure 
C) raising temperature from 74°C to 140°C and dropping it back to 74°C within 5 seconds 
D) presence of a "cooked" flavor in milk flavored with vanilla,strawberry or chocolate

Question 20

What sterilization technique should be used for sterilizing instruments

Accepted Answer

A) Filtration 
B) Disinfection 
C) Pasteurization 
D) Autoclaving 
A) Filtration 
B) Disinfection 
C) Pasteurization 
D) Autoclaving

Exam 13: Sterilization and Disinfection

All of the following are examples of general types of electromagnetic radiation except:

Lyophilization is:

Sterilization is the:

Which of the following do NOT affect viruses

Dyes that are used as antimicrobial agents function by:

Microwave radiation:

Dry heat does most of its damage against microorganisms by _____.

Which sterilization technique would you use on pharmaceutical products

Which does NOT pertain to pasteurization

Which of the following is not an example of an alkylating agent that disrupts proteins and nucleic acids

All of the following apply to the control of microbial growth EXCEPT:

All of the following pertain to sonic or ultrasonic waves and their properties,EXCEPT:

Alcohols:

All of the following qualities apply to the selection of an ideal antiseptic EXCEPT:

An agent that inhibits the growth of bacteria is called a/an:

Which of the following statements about evaluating the effectiveness of chemical agents is false

Which of the following involves sterilization by heating steam in a jacket and subsequent entrance of the steam into a sterilization chamber,where materials and substances to be sterilized are placed in a/an:

Dry heat changes the structure of _______ through the process of _____.

Ultrahigh temperature (UHT)processing does not involve:

What sterilization technique should be used for sterilizing instruments

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

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