Question 1

All of the following are phenols or phenolics except

Accepted Answer

A)  Lysol.
B)  hexachlorophene.
C)  triclosan.
D)  cresols.
E)  chlorhexidine.F) B) and D)
G) B) and C)

Question 2

_____ 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) B) and D)
G) B) and E)

Question 3

The use of a physical or chemical process to destroy vegetative pathogens on inanimate objects is

Accepted Answer

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

Question 4

The chemical agent/s that produce/s highly reactive hydroxyl-free radicals and also decomposes to O2 gas is

Accepted Answer

A)  Cidex.
B)  cationic detergents.
C)  hydrogen peroxide.
D)  chlorhexidine.
E)  iodophors.F) C) and D)
G) All of the above

Question 5

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)  121 ∘\circ∘ C at 15 psi for 15 minutes
D)  160 ∘\circ∘ C for 2 hours
E)  All of the choices are correct. F) B) and D)
G) A) and B)

Question 6

Filtration sterilization

Accepted Answer

A)  can remove viruses.
B)  relies on gravity.
C)  removes toxins.
D)  uses heat and filtration.
E)  leaves behind endospores.F) A) and D)
G) A) and B)

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Intermittent sterilization,which uses 3 days of lower temperature steam for short periods of time,is also called

Accepted Answer

A)  pasteurization.
B)  incubation.
C)  tyndallization.
D)  disinfection.
E)  desiccation.F) A) and B)
G) A) and C)

Question 9

Your little girl is in the ICU ward of a hospital,and you would like to take her favorite little cloth doll to her.However,it must be sterilized.Your choices of sterilization are ethylene oxide gas,ultraviolet radiation,or an iodophor containing solution.Which of the following is an accurate evaluation of these choices?

Accepted Answer

A)  Betadine is not feasible as a choice since most iodophore solutions do not sterilize.
B)  Ethylene oxide gas is a great sterilant,and there is no toxicity associated with it.
C)  Ultraviolet radiation is a good choice for complete sterilization because it is cheap.
D)  All of these choices are equally good as sterilizing agents and will not harm the doll.E) A) and D)
F) C) and D)

Question 10

Which of the following factors will influence the action of microbial agents?

Accepted Answer

A)  the number of microorganisms
B)  the type of microorganisms present
C)  temperature and pH
D)  mode and dosage of the agent
E)  All of the choices will influence the action.F) A) and C)
G) C) and D)

Question 11

Isopropyl alcohol wiped across a skin site can sterilize it.

Accepted Answer

A) True 
 B)False

Question 12

Place the following forms of radiation 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 C)
G) B) and E)

Question 13

All of the following are alkylating control agents except

Accepted Answer

A)  ethylene oxide.
B)  iodophor.
C)  glutaraldehyde.
D)  formaldehyde.
E)  propylene oxide.F) A) and D)
G) B) and C)

Question 14

In lab,inoculating loops are sterilized using

Accepted Answer

A)  moist heat.
B)  chemicals.
C)  incineration.
D)  filtration.
E)  gas sterilization.F) B) and D)
G) C) and D)

Question 15

Your aim is to sterilize prosthetic devices like heart valves and artificial joint structures before being used in the patient.Considering where they will be placed and the probable composition of the devices,what would be the best chemical to use?

Accepted Answer

A)  iodine
B)  crystal violet dye
C)  quaternary ammonium compounds
D)  bleachE) B) and C)
F) A) and B)

Question 16

Alcohols

Accepted Answer

A)  denature proteins when in a 50-95% alcohol-water solution.
B)  disinfect items when soaking method is utilized.
C)  are skin degerming agents.
D)  at 50% or higher concentrations dissolve cell membrane lipids.
E)  All of the choices are correct.F) All of the above
G) D) and E)

Question 17

Endospores can be inactivated by

Accepted Answer

A)  dry heat at 170 ∘\circ∘  C for 2 hours.
B)  incineration.
C)  glutaraldehyde for 3 or more hours.
D)  ethylene oxide for 3 or more hours.
E)  All of the choices are correct. F) C) and E)
G) D) and E)

Question 18

Placing organisms at 4oC is

Accepted Answer

A)  bactericidal.
B)  bacteriostatic.
C)  decontamination.
D)  sterilization.
E)  germicidal.F) A) and C)
G) A) and B)

Question 19

Which of the following is not true of glutaraldehyde?

Accepted Answer

A)  is classified as a carcinogen
B)  inactivates viruses
C)  does not damage plastics
D)  cross-links proteins on cell surfaces
E)  inactivates endospores in 3 hoursF) A) and B)
G) C) and D)

Question 20

Which antimicrobial method does not sterilize?

Accepted Answer

A)  autoclave
B)  ethylene oxide gas
C)  pasteurization
D)  ionizing radiationE) B) and C)
F) B) and D)

Exam 11: Physical and Chemical Control of Microbes

The chemical agent/s that produce/s highly reactive hydroxyl-free radicals and also decomposes to O₂ gas is

Correct Answer
verified

Place the following forms of radiation in order from the most penetrating to the least penetrating.

Correct Answer
verified

Filtration sterilization

Correct Answer
verified

Which of the following factors will influence the action of microbial agents?

Correct Answer
verified

Intermittent sterilization,which uses 3 days of lower temperature steam for short periods of time,is also called

Correct Answer
verified

Correct Answer
verified

Which antimicrobial method does not sterilize?

Correct Answer
verified

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

Correct Answer
verified

Alcohols

Correct Answer
verified

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

Correct Answer
verified

All of the following are phenols or phenolics except

Correct Answer
verified

Isopropyl alcohol wiped across a skin site can sterilize it.

Correct Answer
verified

Which of the following is not true of glutaraldehyde?

Correct Answer
verified

All of the following are alkylating control agents except

Correct Answer
verified

Endospores can be inactivated by

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

The use of a physical or chemical process to destroy vegetative pathogens on inanimate objects is

Correct Answer
verified

In lab,inoculating loops are sterilized using

Correct Answer
verified

Placing organisms at 4^oC is

Correct Answer
verified

Your aim is to sterilize prosthetic devices like heart valves and artificial joint structures before being used in the patient.Considering where they will be placed and the probable composition of the devices,what would be the best chemical to use?

Correct Answer
verified

Exam 11: Physical and Chemical Control of Microbes

The chemical agent/s that produce/s highly reactive hydroxyl-free radicals and also decomposes to O2 gas is

Correct AnswerverifiedShow Answer

Place the following forms of radiation in order from the most penetrating to the least penetrating.

Correct AnswerverifiedShow Answer

Filtration sterilization

Correct AnswerverifiedShow Answer

Which of the following factors will influence the action of microbial agents?

Correct AnswerverifiedShow Answer

Intermittent sterilization,which uses 3 days of lower temperature steam for short periods of time,is also called

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which antimicrobial method does not sterilize?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Alcohols

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

All of the following are phenols or phenolics except

Correct AnswerverifiedShow Answer

Isopropyl alcohol wiped across a skin site can sterilize it.

Correct AnswerverifiedShow Answer

Which of the following is not true of glutaraldehyde?

Correct AnswerverifiedShow Answer

All of the following are alkylating control agents except

Correct AnswerverifiedShow Answer

Endospores can be inactivated by

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

The use of a physical or chemical process to destroy vegetative pathogens on inanimate objects is

Correct AnswerverifiedShow Answer

In lab,inoculating loops are sterilized using

Correct AnswerverifiedShow Answer

Placing organisms at 4oC is

Correct AnswerverifiedShow Answer

Your aim is to sterilize prosthetic devices like heart valves and artificial joint structures before being used in the patient.Considering where they will be placed and the probable composition of the devices,what would be the best chemical to use?

Correct AnswerverifiedShow Answer

The chemical agent/s that produce/s highly reactive hydroxyl-free radicals and also decomposes to O₂ gas is

Correct Answer
verified

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
verified

Placing organisms at 4^oC is

Correct Answer
verified

Correct Answer
verified