Question 1

Dry heat

Accepted Answer

A)  is less efficient than moist heat.
B)  cannot sterilize.
C)  includes tyndallization.
D)  is used in devices called autoclaves.
E)  will sterilize at 121 ∘\circ∘ C for 15 minutes. F) B) and D)
G) A) and C)

Question 2

Hydrogen peroxide is

Accepted Answer

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

Question 3

Using a HEPA filter in a vacuum or furnace is an example of which microbial control method?

Accepted Answer

A)  physical method
B)  dry method
C)  chemical agent
D)  gases
E)  surfactantF) A) and D)
G) None of the above

Question 4

Organisms in the genus Pseudomonas are resistant to quarts.

Accepted Answer

A) True 
 B)False

Question 5

Ethylene oxide is

Accepted Answer

A)  sporicidal.
B)  only effective with high heat.
C)  the active agent in household bleach.
D)  used as an antiseptic against anaerobes.
E)  a halogen.F) A) and E)
G) A) and C)

Question 6

Which is mismatched?

Accepted Answer

A)  sodium hypochlorite - chlorine
B)  iodophor - iodine
C)  benzalkonium chloride - quaternary ammonium compound
D)  merthiolate - silver
E)  formalin - formaldehydeF) A) and C)
G) C) and D)

Question 7

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) A) and D)
G) A) and B)

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) A) and B)
F) None of the above

Question 9

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 dairy,restaurant,and medical equipment.
E)  found in common household bleach.F) C) and D)
G) B) and D)

Question 10

_____ 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 B)
G) A) and D)

Question 11

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)  tyndallization F) B) and C)
G) A) and C)

Question 12

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 D)
G) All of the above

Question 13

Which of the following microbial forms has 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) A) and D)

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Soaps and detergents are very effective as sterilants.

Accepted Answer

A) True 
 B)False

Exam 11: Physical and Chemical Control of Microbes

Using a HEPA filter in a vacuum or furnace is an example of which microbial control method?

Correct Answer
verified

Hydrogen peroxide is

Correct Answer
verified

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

Correct Answer
verified

Soaps and detergents are very effective as sterilants.

Correct Answer
verified

Organisms in the genus Pseudomonas are resistant to quarts.

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

All of the following pertain to hypochlorites except

Correct Answer
verified

Which is mismatched?

Correct Answer
verified

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

Correct Answer
verified

Ethylene oxide is

Correct Answer
verified

What instrument is most effective for pressure-temperature sterilization?

Correct Answer
verified

Dry heat

Correct Answer
verified

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

Correct Answer
verified

Exam 11: Physical and Chemical Control of Microbes

Using a HEPA filter in a vacuum or furnace is an example of which microbial control method?

Correct AnswerverifiedShow Answer

Hydrogen peroxide is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Soaps and detergents are very effective as sterilants.

Correct AnswerverifiedShow Answer

Organisms in the genus Pseudomonas are resistant to quarts.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

All of the following pertain to hypochlorites except

Correct AnswerverifiedShow Answer

Which is mismatched?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Ethylene oxide is

Correct AnswerverifiedShow Answer

What instrument is most effective for pressure-temperature sterilization?

Correct AnswerverifiedShow Answer

Dry heat

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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
verified

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
verified

Correct Answer
verified

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

Correct Answer
verified