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Exam 11: Physical and Chemical Agents for Microbial Control

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Question 31

Multiple Choice

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All of the following are phenols or phenolics, except:

A) Lysol.
B) Hexachlorophene.
C) Triclosan.
D) Cresols.
E) Chloramines.

F) A) and B)
G) C) and E)

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Question 32

Multiple Choice

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Iodophors include:

A) Chloramines.
B) Betadine.
C) Tincture of iodine.
D) Alcohols.
E) Chlorhexidine.

F) None of the above
G) A) and C)

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Question 33

Multiple Choice

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Microbiological contaminants are best described as:

The sterilizing gas used in a special chamber is:

Which of the following types of agents targets protein conformation?

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

Discuss the technique of filtration as a microbial control method, why it's utilized, and specific materials that are filtered.

Alcohols:

_____ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

Compare and contrast antisepsis, disinfection, sanitization, and sterilization with regard to techniques used and level of microbial control achieved.

When a control agent targets the metabolic processes of microbial cells, active younger cells typically die more rapidly than older cells.

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

Using toilet bowl cleaner and nonionizing radiation to inanimate surfaces only removes or kills vegetative bacteria.The term that best describes this action is:

The process of using a cleansing technique to mechanically remove and reduce microorganisms and debris to safe levels is:

_____ filters are widely used to provide a flow of sterile air to hospital rooms.

Chlorine compounds remain stable and effective in the presence of excess organic matter.

Discuss the advantages and disadvantages of irradiating food.Include examples of foods that are irradiated.

Disinfection of beverages, such as apple juice, milk, and wine, is optimally achieved by:

For each item listed below, select a sterilant that you feel is the most suitable and effective for that item.Discuss why you selected each sterilant. A) plastic Petri dishes to be used for nutrient media B) glass tubes of bacterial cultures to be discarded C) sterile milk D) dozens of reusable glass pipets E) bone tissue for grafting F) room air G) hospital mattresses H) biopsy tissue for histology analysis I) plastic respiratory therapy equipment and arthroscopes J) vaccines

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