Question 1

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 acid

Question 2

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.
-Which concentration of alcohol is deemed most effective in alcohol-based hand cleaners?

Accepted Answer

A)  25%
B)  10%
C)  70%
D)  95%

Question 3

Which of the following types of control agents would be used to achieve sterility?

Accepted Answer

A)  virucide
B)  bactericide
C)  germicide
D)  sporicide
E)  fungicide

Question 4

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)  iodophors.

Question 5

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 is correct.

Question 6

Surfactants work by

Accepted Answer

A)  coating the organism,preventing interaction with its environment.
B)  blocking transport into the organism.
C)  blocking transport out from the organism.
D)  disrupting membrane integrity.
E)  All of the choices are correct.

Question 7

Hydrogen peroxide can be

Accepted Answer

A)  sporicidal.
B)  fungicidal.
C)  bactericidal.
D)  virucidal.
E)  All of the choices are correct.

Question 8

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

Accepted Answer

A)  antisepsis.
B)  disinfection.
C)  sterilization.
D)  decontamination.
E)  fegerming.

Question 9

The compound that is an organic base containing chlorine and two phenolic rings,and is used increasingly for mucous membrane irrigation,obstetrical washes,hand scrubbing,and prepping surgical skin sites is

Accepted Answer

A)  carbolic acid.
B)  chlorhexidine.
C)  triclosan.
D)  formalin.
E)  quarternary ammonium compounds.

Question 10

A method for sterilizing milk,called _____ treatment,uses 134 ∘\circ∘ C for 1 to 2 seconds.

Accepted Answer

A)  pasteurization
B)  batch pasteurization
C)  flash pasteurization
D)  ultra high temperature
E)  None of the choices is correct.

Question 11

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 12

Ionizing radiation is more effective than nonionizing radiation in killing microbes.

Accepted Answer

A) True 
 B)False

Question 13

Hydrogen peroxide can be used to sterilize instruments such as endoscopes.

Accepted Answer

A) True 
 B)False

Question 14

In lab,inoculating loops are sterilized using

Accepted Answer

A)  moist heat.
B)  chemicals.
C)  incineration.
D)  filtration.
E)  ethylene oxide.

Question 15

Removal of moisture by dehydration is called

Accepted Answer

A)  desiccation.
B)  flash freeze.
C)  lyophilization.
D)  pasteurization.
E)  sterilization.

Question 16

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.

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

_____ 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)  Ionizing

Question 19

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is

Accepted Answer

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

Question 20

Antimicrobial agents can target the cell wall by

Accepted Answer

A)  blocking its synthesis.
B)  digesting it.
C)  inhibiting peptidoglycan synthesis.
D)  All of the choices are correct.

Exam 9: Physical and Chemical Control of Microbes

_____ 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

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 types of control agents would be used to achieve sterility?

Correct Answer
verified

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

Correct Answer
verified

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is

Correct Answer
verified

Pasteurization

Correct Answer
verified

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

Correct Answer
verified

Removal of moisture by dehydration is called

Correct Answer
verified

Ionizing radiation is more effective than nonionizing radiation in killing microbes.

Correct Answer
verified

Correct Answer
verified

Hydrogen peroxide can be used to sterilize instruments such as endoscopes.

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

A method for sterilizing milk,called _____ treatment,uses 134^$\circ$C for 1 to 2 seconds.

Correct Answer
verified

Antimicrobial agents can target the cell wall by

Correct Answer
verified

In lab,inoculating loops are sterilized using

Correct Answer
verified

The compound that is an organic base containing chlorine and two phenolic rings,and is used increasingly for mucous membrane irrigation,obstetrical washes,hand scrubbing,and prepping surgical skin sites is

Correct Answer
verified

Surfactants work by

Correct Answer
verified

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

Correct Answer
verified

Hydrogen peroxide can be

Correct Answer
verified

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

Correct Answer
verified

Exam 9: Physical and Chemical Control of Microbes

_____ 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

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 types of control agents would be used to achieve sterility?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is

Correct AnswerverifiedShow Answer

Pasteurization

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Removal of moisture by dehydration is called

Correct AnswerverifiedShow Answer

Ionizing radiation is more effective than nonionizing radiation in killing microbes.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Hydrogen peroxide can be used to sterilize instruments such as endoscopes.

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

A method for sterilizing milk,called _____ treatment,uses 134 ∘\circ∘ C for 1 to 2 seconds.

Correct AnswerverifiedShow Answer

Antimicrobial agents can target the cell wall by

Correct AnswerverifiedShow Answer

In lab,inoculating loops are sterilized using

Correct AnswerverifiedShow Answer

The compound that is an organic base containing chlorine and two phenolic rings,and is used increasingly for mucous membrane irrigation,obstetrical washes,hand scrubbing,and prepping surgical skin sites is

Correct AnswerverifiedShow Answer

Surfactants work by

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Hydrogen peroxide can be

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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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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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A method for sterilizing milk,called _____ treatment,uses 134^$\circ$C for 1 to 2 seconds.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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