Question 1

The amount of time needed to sterilize materials using moist heat is (more/less) than the time needed to sterilize using dry heat.

Accepted Answer

The answer of The amount of time needed to sterilize...

Question 2

An instrument that will come into contact with only the skin of a patient should be disinfected with a(n)

Accepted Answer

A)  high- level germicide. 
B)  intermediate- level germicide. 
C)  low- level germicide. 
D)  degerming agent only. 
E)  germistatic agent only. 
A)  high- level germicide. 
B)  intermediate- level germicide. 
C)  low- level germicide. 
D)  degerming agent only. 
E)  germistatic agent only.

Question 3

Microbial growth in jellies is inhibited by the (acidic/hypotonic/hypertonic) condition of the food.

Accepted Answer

The answer of Microbial growth in jellies is inhibited by...

Question 4

Which of the following types of radiation is nonionizing and has the shortest wavelength?

Accepted Answer

A)  infrared radiation 
B)  X- rays 
C)  gamma rays 
D)  ultraviolet light 
E)  microwaves 
A)  infrared radiation 
B)  X- rays 
C)  gamma rays 
D)  ultraviolet light 
E)  microwaves

Question 5

The endospores of which of the following microbes are used to measure the effectiveness of autoclave sterilization?

Accepted Answer

A)  Bacillus stearothermophilus 
B)  Mycobacterium bovis 
C)  Neisseria gonorrhoeae 
D)  Clostridium botulinum 
E)  Pseudomonas aeruginosa 
A)  Bacillus stearothermophilus 
B)  Mycobacterium bovis 
C)  Neisseria gonorrhoeae 
D)  Clostridium botulinum 
E)  Pseudomonas aeruginosa

Question 6

Antimicrobial agents that damage nucleic acids also affect

Accepted Answer

A)  the cell membrane. 
B)  the cell wall. 
C)  the viral envelope. 
D)  endospores. 
E)  protein synthesis. 
A)  the cell membrane. 
B)  the cell wall. 
C)  the viral envelope. 
D)  endospores. 
E)  protein synthesis.

Question 7

Which of the following antimicrobial agents is the most toxic to humans?

Accepted Answer

A)  quats 
B)  iodophors 
C)  70% alcohol 
D)  ethylene oxide 
E)  chloramines 
A)  quats 
B)  iodophors 
C)  70% alcohol 
D)  ethylene oxide 
E)  chloramines

Question 8

Which of the following statements is TRUE of disinfectants?

Accepted Answer

A)  They are used on inanimate surfaces. 
B)  They are only effective for short periods of time (seconds to minutes). 
C)  They are effective in destroying endospores. 
D)  They are used for sterilization. 
E)  They are used on living tissue. 
A)  They are used on inanimate surfaces. 
B)  They are only effective for short periods of time (seconds to minutes). 
C)  They are effective in destroying endospores. 
D)  They are used for sterilization. 
E)  They are used on living tissue.

Question 9

Gamma irradiation is a process for

Accepted Answer

A)  antisepsis. 
B)  disinfection. 
C)  degerming. 
D)  sterilization. 
E)  both antisepsis and disinfection. 
A)  antisepsis. 
B)  disinfection. 
C)  degerming. 
D)  sterilization. 
E)  both antisepsis and disinfection.

Question 10

Heavy metal and oxidizing agent disinfectants damage (proteins/DNA/membranes), interfering with microbial metabolism.

Accepted Answer

The answer of Heavy metal and oxidizing agent disinfectants damage...

Question 11

The compound ethylene oxide is used in

Accepted Answer

A)  sterilization. 
B)  sanitization. 
C)  disinfection. 
D)  degerming. 
E)  antisepsis. 
A)  sterilization. 
B)  sanitization. 
C)  disinfection. 
D)  degerming. 
E)  antisepsis.

Question 12

No chemical or antimicrobial agents inactivate prions.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following would be used to sterilize a mattress?

Accepted Answer

A)  heavy metals 
B)  ethylene oxide 
C)  autoclaving 
D)  radiation 
E)  formaldehyde 
A)  heavy metals 
B)  ethylene oxide 
C)  autoclaving 
D)  radiation 
E)  formaldehyde

Question 14

The pH conditions under which a chemical disinfectant is used do not alter its efficacy.

Accepted Answer

A) True 
 B)False

Question 15

The chemical agents known as "quats" are used for

Accepted Answer

A)  antisepsis. 
B)  quantifying antimicrobial activity. 
C)  disinfection. 
D)  neither antisepsis nor disinfection. 
E)  sterilization. 
A)  antisepsis. 
B)  quantifying antimicrobial activity. 
C)  disinfection. 
D)  neither antisepsis nor disinfection. 
E)  sterilization.

Exam 9: Controlling Microbial Growth in the Environment

The amount of time needed to sterilize materials using moist heat is (more/less) than the time needed to sterilize using dry heat.

An instrument that will come into contact with only the skin of a patient should be disinfected with a(n)

Microbial growth in jellies is inhibited by the (acidic/hypotonic/hypertonic) condition of the food.

Which of the following types of radiation is nonionizing and has the shortest wavelength?

The endospores of which of the following microbes are used to measure the effectiveness of autoclave sterilization?

Antimicrobial agents that damage nucleic acids also affect

Which of the following antimicrobial agents is the most toxic to humans?

Which of the following statements is TRUE of disinfectants?

Gamma irradiation is a process for

Heavy metal and oxidizing agent disinfectants damage (proteins/DNA/membranes), interfering with microbial metabolism.

The compound ethylene oxide is used in

No chemical or antimicrobial agents inactivate prions.

Which of the following would be used to sterilize a mattress?

The pH conditions under which a chemical disinfectant is used do not alter its efficacy.

The chemical agents known as "quats" are used for

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Disease, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram-Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic Dna Viruses

Pathogenic Rna Viruses

Applied and Environmental Microbiology

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