Microbial Control and Resistance Quiz

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Which of the following is the most resistant to microbial control?

Bacterial endospores (correct)

Fungal spores

Other bacteria

Enveloped viruses

What is the term for an inanimate object that serves to transmit disease?

Fomite (correct)

Antisepsis

Disinfection

Sterilization

What is the term for the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

Sanitization

Sterilization (correct)

Degerming

Disinfection

Which term refers to the application of chemicals for removal of potential pathogens from living tissue?

Antisepsis Signup and view all the answers

Which of the following is a chemical used to reduce or kill pathogenic microorganisms on a living object, such as the surface of the human body?

Antiseptic Signup and view all the answers

What is the term for the process of killing or inhibiting the growth of bacteria?

all of the above Signup and view all the answers

Which of the following destroys bacteria?

Bactericide Signup and view all the answers

Which of the following inhibits/prevents the growth of bacteria?

Bacteriostatic Signup and view all the answers

Which of the following destroys viruses?

Viricide Signup and view all the answers

Which of the following inhibits/prevents the growth of fungi?

Fungistatic Signup and view all the answers

Which of the following is the minimal time necessary for killing a population of organisms at a given temperature?

Thermal death time Signup and view all the answers

What is the amount of time it takes for a specific protocol to produce a one order of magnitude decrease in the number of organisms, resulting in the death of 90% of the population?

Decimal reduction time Signup and view all the answers

Which form of physical control of microbes uses direct flame to burn organisms to ashes?

Incineration Signup and view all the answers

How does dry heat kill bacteria compared to moist heat?

Dry heat kills bacteria by coagulating/denaturing proteins Signup and view all the answers

Which of the following is an application of dry heat?

Flaming a loop Signup and view all the answers

Which of the following is an application of moist heat?

Hot-air oven sterilization Signup and view all the answers

Which of the following sterilization methods uses pressurized steam to heat at 121 C with 15 pounds of pressure per inch2?

Autoclaving Signup and view all the answers

Which sterilization method involves heating at 63oC for 30 minutes?

Holding(batch) pasteurization method Signup and view all the answers

Which sterilization method involves heating at 71.6oC for 15 seconds?

High-Temperature Short-Time(HTST)/ Flash pasteurization Signup and view all the answers

Which sterilization method involves heating at 140oC for 3 seconds?

Ultra pasteurization method (UHT) Signup and view all the answers

Which of the following is the most resistant to microbial control?

Bacterial endospores Signup and view all the answers

What is the term for the process of killing or inhibiting the growth of bacteria?

Bactericide Signup and view all the answers

Which of the following inhibits/prevents the growth of fungi?

Fungicide Signup and view all the answers

Which of the following inhibits/prevents the growth of bacteria?

Bacteriostatic Signup and view all the answers

Which of the following destroys bacteria?

Bactericide Signup and view all the answers

Which form of physical control of microbes uses direct flame to burn organisms to ashes?

Incineration Signup and view all the answers

Which of the following is a chemical used to reduce or kill pathogenic microorganisms on a living object, such as the surface of the human body?

Antiseptic Signup and view all the answers

Which of the following is the minimal time necessary for killing a population of organisms at a given temperature?

Decimal reduction time Signup and view all the answers

What is the term for the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

Sterilization Signup and view all the answers

What is the term for an inanimate object that serves to transmit disease?

Fomite Signup and view all the answers

Which of the following forms of physical control of microbes uses radiation?

Heat Signup and view all the answers

Which of the following forms of physical control of microbes kills bacteria by oxidizing cellular components?

Heat Signup and view all the answers

Which of the following forms of physical control of microbes kills bacteria by coagulating/denaturing proteins?

Heat Signup and view all the answers

Which of the following is an application of dry heat?

Incineration Signup and view all the answers

Which of the following is an application of moist heat?

Boiling Signup and view all the answers

Which sterilization method involves heating at 121°C with 15 pounds of pressure per inch²?

Autoclaving Signup and view all the answers

Which sterilization method involves heating at 63°C for 30 minutes?

Boiling Signup and view all the answers

Which sterilization method involves heating at 71.6°C for 15 seconds?

Pasteurization Signup and view all the answers

Which sterilization method involves heating at 140°C for 3 seconds?

Pasteurization Signup and view all the answers

Which of the following is the minimal time necessary for killing a population of organisms at a given temperature?

Thermal death time Signup and view all the answers

Which of the following terms refers to the process of killing or inhibiting the growth of pathogens?

Disinfection Signup and view all the answers

Which of the following is an example of an antiseptic?

Hydrogen peroxide Signup and view all the answers

Which form of physical control of microbes uses chemicals to remove potential pathogens from living tissue?

Antisepsis Signup and view all the answers

Which of the following is the term for an inanimate object that serves to transmit disease?

Fomites Signup and view all the answers

Which of the following forms of physical control of microbes involves the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

Sterilization Signup and view all the answers

Which indicator is used to monitor the effectiveness of the autoclave?

Bromocresol purple Signup and view all the answers

At what temperature is the vial incubated after autoclaving?

35°C Signup and view all the answers

What color does the pH indicator turn if the spores were not killed during autoclaving?

Yellow Signup and view all the answers

Which bacterium's spores are used in the autoclave effectiveness monitoring process?

Geobacillus stearothermophilus Signup and view all the answers

Which type of radiation is considered ionizing radiation?

X-rays Signup and view all the answers

What is the main effect of ionizing radiation on cells?

Damages DNA Signup and view all the answers

Which of the following is NOT a use of ionizing radiation?

Killing bacterial endospores Signup and view all the answers

How does UV radiation differ from ionizing radiation in terms of its effect on bacteria?

UV radiation damages DNA Signup and view all the answers

What is the germicidal wavelength of UV radiation?

100-400 nm 265 nm Signup and view all the answers

What are membrane filters used for?

Trapping organisms in pores Signup and view all the answers

What do HEPA filters remove?

Microbes Signup and view all the answers

What is the main limitation of ionizing radiation as a sterilization method?

Does not kill bacterial endospores Signup and view all the answers

What is the term for the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

Sterilization Signup and view all the answers

What is the main purpose of pasteurizing dose of gamma rays in food preservation?

Preserve and extend the shelf life of food Signup and view all the answers

Which of the following is a limitation of phenol as an antiseptic?

It is expensive Signup and view all the answers

Which of the following is a phenol derivative that is commonly used in mouthwash and topical creams?

Hexylresorcinol Signup and view all the answers

Which of the following is the active ingredient in pHisoHex, a product used in toothpastes, deodorants, and bath soaps?

Hexachlorophene Signup and view all the answers

Which of the following disrupts cell membranes by blocking the synthesis of lipids?

Triclosan Signup and view all the answers

Which of the following is a heavy metal that is commonly used as a skin antiseptic and in swimming pools?

Copper Signup and view all the answers

Which of the following heavy metals is commonly used in eating utensils to inhibit microbial growth?

Silver Signup and view all the answers

Which of the following heavy metals is commonly used to minimize contamination of cell cultures stored inside incubators?

Copper Signup and view all the answers

Which of the following heavy metals denatures proteins, impairing cell function and giving them strong antimicrobial properties?

Zinc Signup and view all the answers

Which of the following is an application of chlorhexidine, a heavy metal?

Surgical scrub Signup and view all the answers

Which of the following is commonly found in antiseptic mouthwashes?

Chlorhexidine Signup and view all the answers

What is the main characteristic of a good disinfectant or antiseptic?

Effective in diluted form Signup and view all the answers

Which chemical is commonly used as an antiseptic and disinfectant?

Silver Signup and view all the answers

Which of the following is a limitation of halogens as disinfectants?

Cannot destroy spores Signup and view all the answers

Which of the following is an example of an organic compound disinfectant?

Povidone-iodine Signup and view all the answers

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

Detergents Signup and view all the answers

Which of the following is a limitation of quaternary ammonium salts as disinfectants?

Reduced activity when mixed with soaps Signup and view all the answers

Which chemical is commonly used as a hand sanitizer and to treat skin before venipuncture?

EtOH Signup and view all the answers

What is the main purpose of using alcohol as a disinfectant?

Denatures proteins and dissolves lipids Signup and view all the answers

Which of the following is a characteristic of soaps?

Work primarily as degerming agents Signup and view all the answers

Which chemical is commonly used as a sanitizing agent for food prep surfaces and industrial equipment?

Benzalkonium chloride Signup and view all the answers

Microbial Control and Resistance Quiz

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Questions and Answers

Which of the following is the most resistant to microbial control?

What is the term for an inanimate object that serves to transmit disease?

What is the term for the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

Which term refers to the application of chemicals for removal of potential pathogens from living tissue?

Which of the following is a chemical used to reduce or kill pathogenic microorganisms on a living object, such as the surface of the human body?

What is the term for the process of killing or inhibiting the growth of bacteria?

Which of the following destroys bacteria?

Which of the following inhibits/prevents the growth of bacteria?

Which of the following destroys viruses?

Which of the following inhibits/prevents the growth of fungi?

Which of the following is the minimal time necessary for killing a population of organisms at a given temperature?

What is the amount of time it takes for a specific protocol to produce a one order of magnitude decrease in the number of organisms, resulting in the death of 90% of the population?

Which form of physical control of microbes uses direct flame to burn organisms to ashes?

How does dry heat kill bacteria compared to moist heat?

Which of the following is an application of dry heat?

Which of the following is an application of moist heat?

Which of the following sterilization methods uses pressurized steam to heat at 121 C with 15 pounds of pressure per inch2?

Which sterilization method involves heating at 63oC for 30 minutes?

Which sterilization method involves heating at 71.6oC for 15 seconds?

Which sterilization method involves heating at 140oC for 3 seconds?

Which of the following is the most resistant to microbial control?

What is the term for the process of killing or inhibiting the growth of bacteria?

Which of the following inhibits/prevents the growth of fungi?

Which of the following inhibits/prevents the growth of bacteria?

Which of the following destroys bacteria?

Which form of physical control of microbes uses direct flame to burn organisms to ashes?

Which of the following is a chemical used to reduce or kill pathogenic microorganisms on a living object, such as the surface of the human body?

Which of the following is the minimal time necessary for killing a population of organisms at a given temperature?

What is the term for the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

What is the term for an inanimate object that serves to transmit disease?

Which of the following forms of physical control of microbes uses radiation?

Which of the following forms of physical control of microbes kills bacteria by oxidizing cellular components?

Which of the following forms of physical control of microbes kills bacteria by coagulating/denaturing proteins?

Which of the following is an application of dry heat?

Which of the following is an application of moist heat?

Which sterilization method involves heating at 121°C with 15 pounds of pressure per inch²?

Which sterilization method involves heating at 63°C for 30 minutes?

Which sterilization method involves heating at 71.6°C for 15 seconds?

Which sterilization method involves heating at 140°C for 3 seconds?

Which of the following is the minimal time necessary for killing a population of organisms at a given temperature?

Which of the following terms refers to the process of killing or inhibiting the growth of pathogens?

Which of the following is an example of an antiseptic?

Which form of physical control of microbes uses chemicals to remove potential pathogens from living tissue?

Which of the following is the term for an inanimate object that serves to transmit disease?

Which of the following forms of physical control of microbes involves the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

Which indicator is used to monitor the effectiveness of the autoclave?

At what temperature is the vial incubated after autoclaving?

What color does the pH indicator turn if the spores were not killed during autoclaving?

Which bacterium's spores are used in the autoclave effectiveness monitoring process?

Which type of radiation is considered ionizing radiation?

What is the main effect of ionizing radiation on cells?

Which of the following is NOT a use of ionizing radiation?

How does UV radiation differ from ionizing radiation in terms of its effect on bacteria?

What is the germicidal wavelength of UV radiation?

What are membrane filters used for?

What do HEPA filters remove?

What is the main limitation of ionizing radiation as a sterilization method?

What is the term for the complete destruction/removal of all living microbes, spores, and viruses on an object or in an area?

What is the main purpose of pasteurizing dose of gamma rays in food preservation?

Which of the following is a limitation of phenol as an antiseptic?

Which of the following is a phenol derivative that is commonly used in mouthwash and topical creams?

Which of the following is the active ingredient in pHisoHex, a product used in toothpastes, deodorants, and bath soaps?

Which of the following disrupts cell membranes by blocking the synthesis of lipids?

Which of the following is a heavy metal that is commonly used as a skin antiseptic and in swimming pools?

Which of the following heavy metals is commonly used in eating utensils to inhibit microbial growth?

Which of the following heavy metals is commonly used to minimize contamination of cell cultures stored inside incubators?

Which of the following heavy metals denatures proteins, impairing cell function and giving them strong antimicrobial properties?

Which of the following is an application of chlorhexidine, a heavy metal?

Which of the following is commonly found in antiseptic mouthwashes?

What is the main characteristic of a good disinfectant or antiseptic?

Which chemical is commonly used as an antiseptic and disinfectant?

Which of the following is a limitation of halogens as disinfectants?

Which of the following is an example of an organic compound disinfectant?

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

Which of the following is a limitation of quaternary ammonium salts as disinfectants?

Which chemical is commonly used as a hand sanitizer and to treat skin before venipuncture?

What is the main purpose of using alcohol as a disinfectant?