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Microbiology: Decontamination and Sterilization Methods

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Microbiology: Decontamination and Sterilization Methods

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Questions and Answers

What is the primary agency responsible for regulating chemicals used in sterilization processes?

National Institutes of Health (NIH)

Food and Drug Administration (FDA) (correct)

Center for Disease Control and Prevention (CDC)

Environmental Protection Agency (EPA)

Which type of sterilization technique is recommended by the FDA for heat-sensitive materials?

Liquid sterilization methods (correct)

Gamma radiation sterilization

Gaseous techniques

UV light sterilization

What is the primary mechanism of action of alcohols in sterilization?

Alkylation of amino-, carboxyl- and hydroxyl groups

Denaturation of cellular proteins

Dehydration of cells, disruption of membranes, and coagulation of protein (correct)

Oxidation of essential sulphydryl groups of enzymes

Which of the following is a disadvantage of using alcohols in sterilization?

Skin irritant, volatile, and inflammable Signup and view all the answers

What is the primary mechanism of action of aldehydes in sterilization?

Alkylation of amino-, carboxyl- and hydroxyl groups Signup and view all the answers

Which type of disinfectant is classified based on its spectrum of activity?

All of the above Signup and view all the answers

What is the primary difference between gaseous and liquid sterilization techniques?

Application parameters Signup and view all the answers

Which of the following is an example of a gaseous disinfectant?

Formaldehyde vapor Signup and view all the answers

What is the recommended concentration of aqueous solution for effective sterilization using alcohols?

70% aqueous solution Signup and view all the answers

Which of the following is a classification of disinfectants based on their mechanism of action?