ADV CH 11 HW

Please select correct statements regarding the use of halogens as antimicrobial control agents. Check All That Apply(5) Chlorine compounds are frequently used for microbial control. Bromine compounds are frequently used for microbial control. Iodine compounds are frequently used for microbial control. Halogens are microbicidal. Halogens are rapidly sporicidal (within 60-120 seconds). Antimicrobial halogen compounds include antiseptics as well as disinfectants. Halogens damage microbes by breaking disulfide bridges that stabilize tertiary and quaternary structure of many enzymes.

1. Chlorine compounds are frequently used for microbial control. 2. Iodine compounds are frequently used for microbial control. 3. Halogens are microbicidal. 4. Antimicrobial halogen compounds include antiseptics as well as disinfectants. 5. Halogens damage microbes by breaking disulfide bridges that stabilize tertiary and quaternary structure of many enzymes.

Please select the advantages of glutaraldehyde as an antimicrobial agent. Check All That Apply(3) It can be used as an antiseptic as well as a disinfectant. Remains effective in the presence of organic matter. Non-corrosive. Chemical sterilant and high-level disinfectant. Effective over a broad range of pH and temperature.

1. Remains effective in the presence of organic matter. 2. Non-corrosive. 3. Chemical sterilant and high-level disinfectant.

Please match the chemical agent with its corresponding common application. 1. hypochlorites 2. iodophors 3. chlorine gas Match each of the options above to the items below. Large-scale disinfection of drinking water. Disinfection in dairies, food processing plants, restaurants, hospitals, homes. Skin and tissue antisepsis.

1.Disinfection in dairies, food processing plants, restaurants, hospitals, homes. 2.Skin and tissue antisepsis. 3.Large-scale disinfection of drinking water.

Please match the term with an appropriate example of its application. 1. use of chlorohexidine to prepare the skin prior to surgery 2. applying an antimicrobial chemical to your lab bench following completion of lab activities 3. use of an autoclave to prepare surgical instruments 4. wearing gloves and a face mask while performing surgery 5. cleaning eating utensils and plates in a restaurant antisepsis sanitization disinfection sterilization asepsis

1.antisepsis 2.disinfection 3.sterilization 4.asepsis 5.sanitization

Please match statements to the chemical agents that they describe. 1. sterilant for plastics and heat sensitive instruments, prepackaged medical supplies; somewhat toxic; requires a special chamber. 2. sterilization of foods such as nuts and spices; breaks down into harmless end-products. 3. appropriate for air and surface sterilization; can be used to sterilize rooms and other large spaces. ethylene oxide chlorine dioxide propylene oxide

1.ethylene oxide 2.propylene oxide 3. chlorine dioxide

Please match the antimicrobial chemical with its appropriate application(s). 1. low temperature sterilizing cabinets for colonoscopies, wound antisepsis, contact lens disinfection 2. chemical sterilant and high level disinfectant; can be used for cold sterilization of instruments that can't withstand heat 3. limited usefulness as a disinfectant because of toxicity, one of the ingredients of embalming fluid formalin hydrogen peroxide glutaraldehyde

1.hydrogen peroxide 2.glutaraldehyde 3.formalin

Please select the factors below that influence the effectiveness of an antimicrobial agent. Check All That Apply(4) The time of day. Temperature. Number of microorganisms. Geographic location. Presence of organic matter. Concentration of dosage of the agent.

Temperature. Number of microorganisms. Presence of organic matter. Concentration of dosage of the agent.

Please select those characteristics of a chemical control agent that make it a desirable agent. Check All That Apply(4) Corrosive to metals and plastics. Water or alcohol soluble and stable. -Cidal to a wide range of microbes, but nontoxic to humans and animal tissue. Rapidly effective in low concentrations. Ineffective in the presence of organic matter. Inexpensive. Short-lived, spontaneously inactivate with time.

Water or alcohol soluble and stable. -Cidal to a wide range of microbes, but nontoxic to humans and animal tissue. Rapidly effective in low concentrations. Inexpensive.

A(n) __________ would be used to destroy bacteria on a countertop whereas a(n) __________ would be used on skin prior to making an incision. antiseptic; disinfectant disinfectant; antiseptic sanitizer; antiseptic antiseptic; sterilant

disinfectant; antiseptic

Please select the statement that describes the antimicrobial activity of alcohols. Destruction of endospores. Disrupt peptidoglycan structure. Interfere with nucleic acid replication and transcription. Disrupt membrane lipids and denature proteins.

disrupt membrane lipids and denature proteins