Question 1

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

Question 2

The compound ethylene oxide is used in

Accepted Answer

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

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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.

Question 5

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 6

No chemical or antimicrobial agents inactivate prions.

Accepted Answer

A) True 
 B)False

Question 7

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 8

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.

Question 9

Gamma irradiation is a process for

Accepted Answer

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

Question 10

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 11

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

Question 12

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.

Question 13

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.

Question 14

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

Question 15

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

Exam 9: Controlling Microbial Growth in the Environment

Which of the following statements is TRUE of disinfectants?

Correct Answer
verified

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

Correct Answer
verified

No chemical or antimicrobial agents inactivate prions.

Correct Answer
verified

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

Correct Answer
verified

The compound ethylene oxide is used in

Correct Answer
verified

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

Correct Answer
verified

The chemical agents known as "quats" are used for

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Antimicrobial agents that damage nucleic acids also affect

Correct Answer
verified

Gamma irradiation is a process for

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Exam 9: Controlling Microbial Growth in the Environment

Which of the following statements is TRUE of disinfectants?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

No chemical or antimicrobial agents inactivate prions.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The compound ethylene oxide is used in

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The chemical agents known as "quats" are used for

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Antimicrobial agents that damage nucleic acids also affect

Correct AnswerverifiedShow Answer

Gamma irradiation is a process for

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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