Question 1

Heavy metals work by

Accepted Answer

A)  rupturing the cell membrane.
B)  inactivating proteins.
C)  binding to DNA.
D)  dissolving the cell wall.
E)  mutating DNA.F) All of the above
G) None of the above

Question 2

Which of the following is not a factor that affects germicidal activity?

Accepted Answer

A)  the material being treated
B)  the length of exposure
C)  the strength of the germicide
D)  the microorganism being treated
E)  All of these are factors.F) A) and E)
G) A) and C)

Question 3

Please read the clinical scenario, and then answer the questions that follow to become familiar with the traditional NCLEX question format.
  A woman who is 38-weeks' pregnant is admitted for a scheduled cesarean section. As the RN, you perform an assessment of the patient and prepare her for the surgery. Prior to the procedure, you prepare to place an indwelling urinary catheter.
-As the RN,you cleanse the urethral opening with an iodine swab.Which of the following terms most appropriately describes this method of microbial control?

Accepted Answer

A)  disinfectant
B)  antiseptic
C)  decontaminant
D)  sterilantE) B) and D)
F) A) and D)

Question 4

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format.
  A 13-year-old male is admitted to the pediatric intensive care unit. The patient has a history of mental retardation and cerebral palsy following an anoxic injury as an infant. The patient was admitted 2 months earlier due to aspiration pneumonia, necessitating a lengthy hospital stay, mechanical ventilation, and intravenous antibiotics. His caregiver reports another aspiration event 2 days prior. For the past 24 hours, the patient has been lethargic with a frequent cough producing thick sputum. Upon presentation to the hospital, the patient is noted to have a fever, low oxygen saturations, and low blood pressure. Upon arrival to the intensive care unit, the patient is cool, pale, and has poor pulses and capillary refill. Following administration of intravenous fluid boluses, it is determined the patient needs central venous access for fluid and medication administration. As the RN, you prepare for the sterile procedure. 
-Prior to placement of the central venous line,the patient's skin is scrubbed with chlorhexidine.Which of the following microorganisms are targeted by this chemical agent?

Accepted Answer

A)  bacteria
B)  viruses
C)  fungi
D)  bacteria,viruses,and fungiE) B) and C)
F) B) and D)

Question 5

Which of the following does not affect microbial nucleic acids?

Accepted Answer

A)  moist heat
B)  ultraviolet light
C)  X rays
D)  ethylene dioxide
E)  formaldehydeF) B) and D)
G) A) and B)

Question 6

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format.
  As an RN in a long-term care facility, you observe precautions to control and prevent the spread of infection.
-As an RN,you diligently practice proper hand washing technique when your hands are visibly dirty.Which of the following terms appropriately describes the type of antimicrobial control provided by hand washing with soap and water?

Accepted Answer

A)  sterilization
B)  disinfection
C)  decontamination
D)  antisepsisE) B) and D)
F) B) and C)

Question 7

The removal of all life forms from inanimate objects is termed

Accepted Answer

A)  antisepsis.
B)  disinfection.
C)  sterilization.
D)  decontamination.
E)  degerming.F) B) and C)
G) A) and B)

Question 8

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

Accepted Answer

A)  antisepsis.
B)  disinfection.
C)  sterilization.
D)  decontamination.
E)  degerming.F) C) and E)
G) None of the above

Question 9

Isopropyl alcohol wiped across a skin site can sterilize it.

Accepted Answer

A) True 
 B)False

Question 10

The most efficient sterilizing conditions in a steam autoclave are

Accepted Answer

A)  12 ∘\circ∘ C at 15 psi for 15 minutes.
B)  63 ∘\circ∘ C for 30 minutes.
C)  160 ∘\circ∘ C for 2 hours.
D)  71.6 ∘\circ∘ C for 15 seconds.
E)  100 ∘\circ∘ C for 30 minutes. F) B) and C)
G) B) and D)

Question 11

_____ 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) A) and E)
G) C) and D)

Question 12

Which of the following is not used as an antiseptic?

Accepted Answer

A)  iodophor
B)  chlorhexidine
C)  3% hydrogen peroxide
D)  betadine (povidone-iodine) 
E)  glutaraldehydeF) C) and D)
G) B) and D)

Question 13

Sterilization is achieved by

Accepted Answer

A)  flash pasteurization.
B)  hot water.
C)  boiling water.
D)  steam autoclave.
E)  All of the choices are correct.F) B) and D)
G) A) and B)

Question 14

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) A) and D)
G) D) and E)

Question 15

The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is

Accepted Answer

A)  disinfection.
B)  sterilization.
C)  antisepsis.
D)  sanitization.
E)  ionizationF) B) and E)
G) B) and D)

Question 16

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) A) and C)
F) B) and C)

Question 17

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 rays.F) C) and E)
G) All of the above

Question 18

Which is correct regarding the rate of microbial death?

Accepted Answer

A)  Cells die at increasingly greater rates.
B)  Only older cells die in a culture.
C)  Cells in a culture die at a constant rate.
D)  Upon contact with the control agent,all cells die at one time.
E)  Cells become metabolically inactive,but are never killed.F) A) and C)
G) C) and E)

Question 19

Which control method would not be a suitable choice for killing Mycobacterium in a capped culture tube?

Accepted Answer

A)  ultraviolet (germicidal) light
B)  gamma rays
C)  12 ∘\circ∘ C at 15 psi for 15 minutes
D)  160 ∘\circ∘ C for 2 hours
E)  All of the choices are correct. F) All of the above
G) B) and D)

Question 20

All of the following pertain to hypochlorites except

Accepted Answer

A)  release hypochlorous acid in solution.
B)  cause denaturation of enzymes.
C)  found in iodophors.
D)  used to disinfect water,restaurant,and medical equipment.
E)  found in common household bleach.F) B) and E)
G) D) and E)

Exam 9: Physical and Chemical Control of Microbes

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

Correct Answer
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Which of the following is not a factor that affects germicidal activity?

Correct Answer
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Heavy metals work by

Correct Answer
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The most efficient sterilizing conditions in a steam autoclave are

Correct Answer
verified

Which control method would not be a suitable choice for killing Mycobacterium in a capped culture tube?

Correct Answer
verified

Correct Answer
verified

The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is

Correct Answer
verified

Correct Answer
verified

The removal of all life forms from inanimate objects is termed

Correct Answer
verified

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

Correct Answer
verified

Sterilization is achieved by

Correct Answer
verified

Which of the following does not affect microbial nucleic acids?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Which is correct regarding the rate of microbial death?

Correct Answer
verified

Which of the following is not used as an antiseptic?

Correct Answer
verified

Isopropyl alcohol wiped across a skin site can sterilize it.

Correct Answer
verified

All of the following pertain to hypochlorites except

Correct Answer
verified

Exam 9: Physical and Chemical Control of Microbes

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is not a factor that affects germicidal activity?

Correct AnswerverifiedShow Answer

Heavy metals work by

Correct AnswerverifiedShow Answer

The most efficient sterilizing conditions in a steam autoclave are

Correct AnswerverifiedShow Answer

Which control method would not be a suitable choice for killing Mycobacterium in a capped culture tube?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The removal of all life forms from inanimate objects is termed

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Sterilization is achieved by

Correct AnswerverifiedShow Answer

Which of the following does not affect microbial nucleic acids?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which is correct regarding the rate of microbial death?

Correct AnswerverifiedShow Answer

Which of the following is not used as an antiseptic?

Correct AnswerverifiedShow Answer

Isopropyl alcohol wiped across a skin site can sterilize it.

Correct AnswerverifiedShow Answer

All of the following pertain to hypochlorites except

Correct AnswerverifiedShow Answer

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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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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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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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