Question 1

In lab,inoculating loops are sterilized using ________.

Accepted Answer

A)  moist heat
B)  chemicals
C)  incineration
D)  filtration
E)  ethylene oxideF) A) and D)
G) A) and E)

Question 2

Which pair of physical control methods will achieve complete sterilization?

Accepted Answer

A)  Autoclaving and ionizing radiation
B)  Ultraviolet radiation and filtration
C)  Freezing and filtration
D)  Osmotic pressure and incineration
E)  Pasteurization and ultraviolet radiationF) D) and E)
G) A) and B)

Question 3

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 practices proper handwashing technique when his hands are visibly dirty.Which of the following terms most appropriately describes the type of antimicrobial control provided by handwashing with germicidal soap and water?

Accepted Answer

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

Question 4

When a control agent targets the metabolic processes of microbial cells,active younger cells typically die more rapidly than older cells.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following statements is true when comparing moist heat methods of microbial control to dry heat control?

Accepted Answer

A)  Both moist heat and dry heat methods can achieve complete sterilization.
B)  Only moist heat (autoclaving) can sterilize objects,dry heat is limited to disinfection.
C)  Dry heat is more efficient than moist heat,requiring less time to sterilize objects.
D)  Boiling is a more successful method of sterilizing instruments than using a dry heat oven.E) B) and D)
F) B) and C)

Question 6

Pasteurization ________.

Accepted Answer

A)  kills all vegetative forms
B)  reduces the number of vegetative forms
C)  reduces the number of endospores
D)  increases food nutrient value
E)  None of the choices are correctF) A) and D)
G) A) and C)

Question 7

The chemical agent that produces highly toxic and reactive free radicals is ________.

Accepted Answer

A)  cidex
B)  cationic detergents
C)  hydrogen peroxide
D)  chlorhexidine
E)  iodophorsF) A) and C)
G) A) and B)

Question 8

What instrument is most effective for pressure-temperature sterilization?

Accepted Answer

A)  Oven
B)  Autoclave
C)  Water bath
D)  Bunsen burner
E)  IncubatorF) B) and C)
G) A) and C)

Question 9

Some microbial control agents are able to ________ cell proteins by breaking bonds that maintain the native state (three-dimensional configuration) of the proteins.

Accepted Answer

A)  denature
B)  bind
C)  dissolve
D)  activate
E)  All of the choices are correct.F) B) and C)
G) A) and D)

Question 10

Pasteurization does not kill endospores or thermoduric microbes.

Accepted Answer

A) True 
 B)False

Question 11

Temperature and time must be considered when determining susceptibility of microbes to lethal conditions.  At a specific temperature,the thermal death ________ can be determined,alternatively,the thermal death ________ can be assessed as the lowest temperature that will kill a test organism in 10 minutes.

Accepted Answer

A)  time; point
B)  point; time
C)  exposure,time
D)  point; exposureE) None of the above
F) C) and D)

Question 12

Which of the following represents the use of osmotic pressure as a microbial control method?

Accepted Answer

A)  Bleaching a kitchen counter
B)  Salting meat
C)  Rinsing a cut with Betadine
D)  Both bleaching a kitchen counter and rinsing a cut with Betadine are correct.E) B) and C)
F) All of the above

Question 13

HEPA filters are used to remove microbes from ________.

Accepted Answer

A)  air
B)  liquids
C)  human tissues
D)  medical instruments
E)  All of the choices are correctF) All of the above
G) A) and E)

Question 14

A woman who is 38 weeks pregnant is admitted for a scheduled cesarean section. The RN performs an assessment of the patient and prepares her for the surgery. Prior to the procedure, an indwelling urinary catheter is placed.
-The RN cleanses the urethral opening with an iodine swab.Which of the following terms most appropriately describes this method of microbial control?

Accepted Answer

A)  Disinfection
B)  Antisepsis
C)  Decontamination
D)  SterilizationE) A) and B)
F) B) and C)

Question 15

Beginning Fall 2017,the FDA banned the use of phenolic compounds,such as triclosan,in consumer soaps and lotions.  This is due to ________.

Accepted Answer

A)  increased microbial resistance to these chemicals
B)  they only work against bacterial cells,not fungi or viruses
C)  the inefficiency of phenolics as antimicrobials
D)  a worldwide shortage of triclosanE) A) and B)
F) B) and D)

Question 16

Each of the following is the target of antimicrobial agents except ________.

Accepted Answer

A)  cell walls
B)  cell membranes
C)  ribosomes
D)  cellular proteins
E)  cytoplasmF) B) and C)
G) A) and C)

Question 17

The removal of all 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 E)

Question 18

Most microbial contaminants of food are killed at freezing temperatures.

Accepted Answer

A) True 
 B)False

Question 19

The alcohol wipe before an injection is an example of ________.

Accepted Answer

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

Question 20

The method of removing vegetative life forms from living surfaces is termed ________.

Accepted Answer

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

Exam 9: Physical and Chemical Control of Microbes

HEPA filters are used to remove microbes from ________.

Correct Answer
verified

Temperature and time must be considered when determining susceptibility of microbes to lethal conditions. At a specific temperature,the thermal death can be determined,alternatively,the thermal death can be assessed as the lowest temperature that will kill a test organism in 10 minutes.

Correct Answer
verified

In lab,inoculating loops are sterilized using ________.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The chemical agent that produces highly toxic and reactive free radicals is ________.

Correct Answer
verified

Pasteurization ________.

Correct Answer
verified

Which pair of physical control methods will achieve complete sterilization?

Correct Answer
verified

Pasteurization does not kill endospores or thermoduric microbes.

Correct Answer
verified

Each of the following is the target of antimicrobial agents except ________.

Correct Answer
verified

Which of the following statements is true when comparing moist heat methods of microbial control to dry heat control?

Correct Answer
verified

What instrument is most effective for pressure-temperature sterilization?

Correct Answer
verified

Some microbial control agents are able to ________ cell proteins by breaking bonds that maintain the native state (three-dimensional configuration) of the proteins.

Correct Answer
verified

Which of the following represents the use of osmotic pressure as a microbial control method?

Correct Answer
verified

When a control agent targets the metabolic processes of microbial cells,active younger cells typically die more rapidly than older cells.

Correct Answer
verified

Beginning Fall 2017,the FDA banned the use of phenolic compounds,such as triclosan,in consumer soaps and lotions. This is due to ________.

Correct Answer
verified

The method of removing vegetative life forms from living surfaces is termed ________.

Correct Answer
verified

The removal of all life forms from inanimate objects is termed ________.

Correct Answer
verified

Most microbial contaminants of food are killed at freezing temperatures.

Correct Answer
verified

The alcohol wipe before an injection is an example of ________.

Correct Answer
verified

Exam 9: Physical and Chemical Control of Microbes

HEPA filters are used to remove microbes from ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In lab,inoculating loops are sterilized using ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The chemical agent that produces highly toxic and reactive free radicals is ________.

Correct AnswerverifiedShow Answer

Pasteurization ________.

Correct AnswerverifiedShow Answer

Which pair of physical control methods will achieve complete sterilization?

Correct AnswerverifiedShow Answer

Pasteurization does not kill endospores or thermoduric microbes.

Correct AnswerverifiedShow Answer

Each of the following is the target of antimicrobial agents except ________.

Correct AnswerverifiedShow Answer

Which of the following statements is true when comparing moist heat methods of microbial control to dry heat control?

Correct AnswerverifiedShow Answer

What instrument is most effective for pressure-temperature sterilization?

Correct AnswerverifiedShow Answer

Some microbial control agents are able to ________ cell proteins by breaking bonds that maintain the native state (three-dimensional configuration) of the proteins.

Correct AnswerverifiedShow Answer

Which of the following represents the use of osmotic pressure as a microbial control method?

Correct AnswerverifiedShow Answer

When a control agent targets the metabolic processes of microbial cells,active younger cells typically die more rapidly than older cells.

Correct AnswerverifiedShow Answer

Beginning Fall 2017,the FDA banned the use of phenolic compounds,such as triclosan,in consumer soaps and lotions. This is due to ________.

Correct AnswerverifiedShow Answer

The method of removing vegetative life forms from living surfaces is termed ________.

Correct AnswerverifiedShow Answer

The removal of all life forms from inanimate objects is termed ________.

Correct AnswerverifiedShow Answer

Most microbial contaminants of food are killed at freezing temperatures.

Correct AnswerverifiedShow Answer

The alcohol wipe before an injection is an example of ________.

Correct AnswerverifiedShow Answer

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