Question 1

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection.
-Which of the following scenarios are most appropriate for handwashing with an alcohol-based hand cleanser instead of soap and water?

Accepted Answer

A)  Following a diaper change with visible soiling on the hands after glove removal
B)  Following a wound dressing change when a glove tore during the procedure
C)  Prior to applying gloves
D)  Prior to returning to work after eating lunchE) A) and B)
F) All of the above

Question 2

Agents that can denature microbial proteins include all of the following except ________.

Accepted Answer

A)  moist heat
B)  alcohol
C)  acids
D)  metallic ions
E)  X raysF) B) and D)
G) None of the above

Question 3

The easiest microbial forms to kill or inhibit are ________.

Accepted Answer

A)  prions
B)  vegetative bacteria and fungi
C)  endospores
D)  protozoan cysts
E)  mycobacteria and staphylococciF) A) and E)
G) A) and D)

Question 4

A cleansing method that mechanically removes microbes and other debris to reduce contamination is ________.

Accepted Answer

A)  disinfection
B)  sterilization.
C)  antisepsis
D)  sanitization
E)  degermationF) A) and D)
G) None of the above

Question 5

________ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

Accepted Answer

A)  Infrared
B)  Ultraviolet
C)  Gamma
D)  Particle
E)  IonizingF) A) and E)
G) B) and D)

Question 6

Chlorhexidine kills microbes by ________.

Accepted Answer

A)  targeting cell membranes,cell walls and denaturing proteins
B)  disrupting cell surface tension
C)  inactivating enzymes by binding to the active site
D)  blocking DNA replication
E)  forming free radicals that create thymine dimers in the DNAF) C) and E)
G) D) and E)

Question 7

The method of removing vegetative microbial life forms from inanimate objects is termed ________.

Accepted Answer

A)  antisepsis
B)  disinfection
C)  sterilization
D)  decontamination
E)  degermingF) B) and D)
G) A) and B)

Question 8

Which of the following acids is not used to destroy or inhibit microbial cells in food?

Accepted Answer

A)  Acetic acid
B)  Benzoic acid
C)  Lactic acid
D)  Phosphoric acid
E)  Propionic acidF) B) and D)
G) A) and E)

Question 9

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection.
-The RN utilizes an alcohol-based hand cleanser with friction rub when his hands are not visibly dirty.Which of the following terms appropriately describes the type of antimicrobial control provided by alcohol-based hand cleansers?

Accepted Answer

A)  Sterilization
B)  Disinfection
C)  Decontamination
D)  AntisepsisE) A) and D)
F) B) and C)

Question 10

Hydrogen peroxide can be ________.

Accepted Answer

A)  sporicidal
B)  fungicidal
C)  bactericidal
D)  virucidal
E)  All of the choices are correctF) All of the above
G) D) and E)

Question 11

When comparing the Bunsen burner and a hot-air oven,the Bunsen burner is more versatile since it can sterilize a wide range of materials,including plastics,cottons and oils.

Accepted Answer

A) True 
 B)False

Question 12

________ heat is more rapidly effective and efficient compared to ________ heat.

Accepted Answer

A)  High; dry
B)  High; moist
C)  Dry; moist
D)  Moist; dry
E)  Moist; highF) B) and C)
G) B) and E)

Question 13

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection.
-Which of the following microbes are targeted by alcohol-based hand cleaners?

Accepted Answer

A)  Bacteria
B)  Viruses
C)  Fungi
D)  Bacteria,viruses,and fungiE) A) and B)
F) A) and C)

Question 14

Prions require more extensive methods of sterilization than are needed for bacterial endospores.

Accepted Answer

A) True 
 B)False

Question 15

Alcohols are more effective at inactivating enveloped viruses than naked viruses.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following forms of radiation is in order from the most penetrating to the least penetrating?

Accepted Answer

A)  Gamma,cathode,X rays
B)  Gamma,X rays,cathode
C)  Cathode,gamma,X ray
D)  Cathode,X ray,gamma
E)  X ray,gamma,cathodeF) B) and D)
G) All of the above

Question 17

The most efficient sterilizing conditions in a steam autoclave are ________.

Accepted Answer

A)  121°C at 15 psi for 15 minutes
B)  63°C for 30 minutes
C)  160°C for 2 hours
D)  71.6°C for 15 seconds
E)  100°C for 30 minutesF) All of the above
G) A) and D)

Question 18

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following microbial forms have the highest resistance to physical and chemical controls?

Accepted Answer

A)  Naked viruses
B)  Protozoan cysts
C)  Fungal spores
D)  Bacterial endospores
E)  YeastF) B) and E)
G) C) and D)

Question 20

Which of the following items are typically irradiated in order to kill microbes?

Accepted Answer

A)  Meats like ground beef and pork
B)  Human tissues such as heart valves and skin
C)  Operating room air
D)  Surgical gloves
E)  All of the choices are correct.F) B) and E)
G) A) and E)

Exam 9: Physical and Chemical Control of Microbes

Alcohols are more effective at inactivating enveloped viruses than naked viruses.

Correct Answer
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Correct Answer
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Chlorhexidine kills microbes by ________.

Correct Answer
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Agents that can denature microbial proteins include all of the following except ________.

Correct Answer
verified

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection. -Which of the following scenarios are most appropriate for handwashing with an alcohol-based hand cleanser instead of soap and water?

Correct Answer
verified

heat is more rapidly effective and efficient compared to heat.

Correct Answer
verified

________ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

Correct Answer
verified

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection. -Which of the following microbes are targeted by alcohol-based hand cleaners?

Correct Answer
verified

When comparing the Bunsen burner and a hot-air oven,the Bunsen burner is more versatile since it can sterilize a wide range of materials,including plastics,cottons and oils.

Correct Answer
verified

Which of the following items are typically irradiated in order to kill microbes?

Correct Answer
verified

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

Correct Answer
verified

Hydrogen peroxide can be ________.

Correct Answer
verified

Which of the following acids is not used to destroy or inhibit microbial cells in food?

Correct Answer
verified

Which of the following forms of radiation is in order from the most penetrating to the least penetrating?

Correct Answer
verified

The easiest microbial forms to kill or inhibit are ________.

Correct Answer
verified

The method of removing vegetative microbial life forms from inanimate objects is termed ________.

Correct Answer
verified

Prions require more extensive methods of sterilization than are needed for bacterial endospores.

Correct Answer
verified

A cleansing method that mechanically removes microbes and other debris to reduce contamination is ________.

Correct Answer
verified

Which of the following microbial forms have the highest resistance to physical and chemical controls?

Correct Answer
verified

The most efficient sterilizing conditions in a steam autoclave are ________.

Correct Answer
verified

Exam 9: Physical and Chemical Control of Microbes

Alcohols are more effective at inactivating enveloped viruses than naked viruses.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Chlorhexidine kills microbes by ________.

Correct AnswerverifiedShow Answer

Agents that can denature microbial proteins include all of the following except ________.

Correct AnswerverifiedShow Answer

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection. -Which of the following scenarios are most appropriate for handwashing with an alcohol-based hand cleanser instead of soap and water?

Correct AnswerverifiedShow Answer

________ heat is more rapidly effective and efficient compared to ________ heat.

Correct AnswerverifiedShow Answer

________ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

Correct AnswerverifiedShow Answer

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection. -Which of the following microbes are targeted by alcohol-based hand cleaners?

Correct AnswerverifiedShow Answer

When comparing the Bunsen burner and a hot-air oven,the Bunsen burner is more versatile since it can sterilize a wide range of materials,including plastics,cottons and oils.

Correct AnswerverifiedShow Answer

Which of the following items are typically irradiated in order to kill microbes?

Correct AnswerverifiedShow Answer

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

Correct AnswerverifiedShow Answer

Hydrogen peroxide can be ________.

Correct AnswerverifiedShow Answer

Which of the following acids is not used to destroy or inhibit microbial cells in food?

Correct AnswerverifiedShow Answer

Which of the following forms of radiation is in order from the most penetrating to the least penetrating?

Correct AnswerverifiedShow Answer

The easiest microbial forms to kill or inhibit are ________.

Correct AnswerverifiedShow Answer

The method of removing vegetative microbial life forms from inanimate objects is termed ________.

Correct AnswerverifiedShow Answer

Prions require more extensive methods of sterilization than are needed for bacterial endospores.

Correct AnswerverifiedShow Answer

A cleansing method that mechanically removes microbes and other debris to reduce contamination is ________.

Correct AnswerverifiedShow Answer

Which of the following microbial forms have the highest resistance to physical and chemical controls?

Correct AnswerverifiedShow Answer

The most efficient sterilizing conditions in a steam autoclave are ________.

Correct AnswerverifiedShow Answer

Correct Answer
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heat is more rapidly effective and efficient compared to heat.

Correct Answer
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Correct Answer
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