Question 1

Which of the following is an example of sanitization?

Accepted Answer

A)   A public toilet is treated with disinfectants.
B)   A nurse prepares an injection site with an alcohol swab.
C)   An autoclave is used to prepare nutrient agar.
D)   Heat is used to kill potential pathogens in apple juice.
E)   A surgeon washes her hands before surgery.F) None of the above
G) All of the above

Question 2

Ultraviolet light penetrates (more/less) effectively than gamma rays.

Accepted Answer

The answer of Ultraviolet light penetrates (more/less) effectively than gamma...

Question 3

A germistatic agent would be effective on

Accepted Answer

A)   vegetative bacterial cells.
B)   nonenveloped viruses.
C)   protozoal cysts.
D)   fungus spores.
E)   bacterial endospores.F) None of the above
G) A) and B)

Question 4

Hydrogen peroxide is NOT an effective antiseptic because

Accepted Answer

A)   it evaporates too quickly.
B)   exposure to light rapidly degrades it.
C)   the catalase present in skin cells degrades it.
D)   it is only effective on a small number of fungi.
E)   it is mostly water.F) B) and E)
G) B) and C)

Question 5

Which of the following would be used to sterilize a mattress?

Accepted Answer

A)   ethylene oxide
B)   formaldehyde
C)   radiation
D)   heavy metals
E)   autoclavingF) C) and D)
G) A) and C)

Question 6

Silvadene, a topical treatment for burns, contains 1% silver. What category of chemical control agent is in Silvadene?

Accepted Answer

A)   heavy metals
B)   aldehydes
C)   oxidizing agents
D)   halogens
E)   surfactantsF) B) and E)
G) B) and C)

Question 7

An instrument that will come into contact with only the skin of a patient should be disinfected with a(n)

Accepted Answer

A)   intermediate-level germicide.
B)   degerming agent only.
C)   germistatic agent only.
D)   low-level germicide.
E)   high-level germicide.F) None of the above
G) B) and C)

Question 8

Microbial growth in jellies is inhibited by the (acidic/hypotonic/hypertonic) condition of the food.

Accepted Answer

The answer of Microbial growth in jellies is inhibited by...

Question 9

Some scientists are pursuing the use of bacteriophage as an alternative to chemical disinfectants. Discuss the advantages and disadvantages of such an approach.

Accepted Answer

A good answer will include some of the f...

Question 10

No chemical or antimicrobial agents inactivate prions.

Accepted Answer

A) True 
 B)False

Question 11

Why is Bacillus stearothermophilus useful as an indicator of sterility?

Accepted Answer

A)   It is a very common contaminant.
B)   Only incineration will destroy it.
C)   It has a cell wall containing a waxy compound which protects it from drying and aqueous disinfectants.
D)   It forms cysts which resist a wide range of disinfectant methods.
E)   It forms endospores, among the most hardy of microbial contaminants.F) B) and E)
G) A) and E)

Question 12

Removal of microbes from the skin is antisepsis.

Accepted Answer

A) True 
 B)False

Question 13

The process of heating milk or fruit juice to levels that kill any pathogenic microbes present is known as (pasteurization/sanitization/lyophilization).

Accepted Answer

The answer of The process of heating milk or fruit...

Question 14

The (endospores/cysts/prions) are the infectious agents most resistant to antimicrobial agents or processes.

Accepted Answer

The answer of The (endospores/cysts/prions) are the infectious agents most...

Question 15

Elements such as iodine, chlorine, and bromine are examples of (oxidizers/halogens/metals) and are the basis for many effective antimicrobial agents.

Accepted Answer

The answer of Elements such as iodine, chlorine, and bromine...

Exam 9: Controlling Microbial Growth in the Environment

The process of heating milk or fruit juice to levels that kill any pathogenic microbes present is known as (pasteurization/sanitization/lyophilization).

Correct Answer
verified

Elements such as iodine, chlorine, and bromine are examples of (oxidizers/halogens/metals) and are the basis for many effective antimicrobial agents.

Correct Answer
verified

Hydrogen peroxide is NOT an effective antiseptic because

Correct Answer
verified

Silvadene, a topical treatment for burns, contains 1% silver. What category of chemical control agent is in Silvadene?

Correct Answer
verified

A germistatic agent would be effective on

Correct Answer
verified

Why is Bacillus stearothermophilus useful as an indicator of sterility?

Correct Answer
verified

Removal of microbes from the skin is antisepsis.

Correct Answer
verified

An instrument that will come into contact with only the skin of a patient should be disinfected with a(n)

Correct Answer
verified

No chemical or antimicrobial agents inactivate prions.

Correct Answer
verified

Which of the following is an example of sanitization?

Correct Answer
verified

The (endospores/cysts/prions) are the infectious agents most resistant to antimicrobial agents or processes.

Correct Answer
verified

Ultraviolet light penetrates (more/less) effectively than gamma rays.

Correct Answer
verified

Some scientists are pursuing the use of bacteriophage as an alternative to chemical disinfectants. Discuss the advantages and disadvantages of such an approach.

Correct Answer
verified
A good answer will include some of the f...
View Answer

Which of the following would be used to sterilize a mattress?

Correct Answer
verified

Microbial growth in jellies is inhibited by the (acidic/hypotonic/hypertonic) condition of the food.

Correct Answer
verified

Exam 9: Controlling Microbial Growth in the Environment

The process of heating milk or fruit juice to levels that kill any pathogenic microbes present is known as (pasteurization/sanitization/lyophilization).

Correct AnswerverifiedShow Answer

Elements such as iodine, chlorine, and bromine are examples of (oxidizers/halogens/metals) and are the basis for many effective antimicrobial agents.

Correct AnswerverifiedShow Answer

Hydrogen peroxide is NOT an effective antiseptic because

Correct AnswerverifiedShow Answer

Silvadene, a topical treatment for burns, contains 1% silver. What category of chemical control agent is in Silvadene?

Correct AnswerverifiedShow Answer

A germistatic agent would be effective on

Correct AnswerverifiedShow Answer

Why is Bacillus stearothermophilus useful as an indicator of sterility?

Correct AnswerverifiedShow Answer

Removal of microbes from the skin is antisepsis.

Correct AnswerverifiedShow Answer

An instrument that will come into contact with only the skin of a patient should be disinfected with a(n)

Correct AnswerverifiedShow Answer

No chemical or antimicrobial agents inactivate prions.

Correct AnswerverifiedShow Answer

Which of the following is an example of sanitization?

Correct AnswerverifiedShow Answer

The (endospores/cysts/prions) are the infectious agents most resistant to antimicrobial agents or processes.

Correct AnswerverifiedShow Answer

Ultraviolet light penetrates (more/less) effectively than gamma rays.

Correct AnswerverifiedShow Answer

Some scientists are pursuing the use of bacteriophage as an alternative to chemical disinfectants. Discuss the advantages and disadvantages of such an approach.

Correct AnswerverifiedA good answer will include some of the f...View AnswerShow Answer

Which of the following would be used to sterilize a mattress?

Correct AnswerverifiedShow Answer

Microbial growth in jellies is inhibited by the (acidic/hypotonic/hypertonic) condition of the food.

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
verified
A good answer will include some of the f...
View Answer

Correct Answer
verified

Correct Answer
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