Microbial Control and Resistance Quiz
79 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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?

    <p>Antisepsis</p> 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?

    <p>Antiseptic</p> Signup and view all the answers

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

    <p>all of the above</p> Signup and view all the answers

    Which of the following destroys bacteria?

    <p>Bactericide</p> Signup and view all the answers

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

    <p>Bacteriostatic</p> Signup and view all the answers

    Which of the following destroys viruses?

    <p>Viricide</p> Signup and view all the answers

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

    <p>Fungistatic</p> 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?

    <p>Thermal death time</p> 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?

    <p>Decimal reduction time</p> Signup and view all the answers

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

    <p>Incineration</p> Signup and view all the answers

    How does dry heat kill bacteria compared to moist heat?

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

    Which of the following is an application of dry heat?

    <p>Flaming a loop</p> Signup and view all the answers

    Which of the following is an application of moist heat?

    <p>Hot-air oven sterilization</p> 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?

    <p>Autoclaving</p> Signup and view all the answers

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

    <p>Holding(batch) pasteurization method</p> Signup and view all the answers

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

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

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

    <p>Ultra pasteurization method (UHT)</p> Signup and view all the answers

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

    <p>Bacterial endospores</p> Signup and view all the answers

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

    <p>Bactericide</p> Signup and view all the answers

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

    <p>Fungicide</p> Signup and view all the answers

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

    <p>Bacteriostatic</p> Signup and view all the answers

    Which of the following destroys bacteria?

    <p>Bactericide</p> Signup and view all the answers

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

    <p>Incineration</p> 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?

    <p>Antiseptic</p> 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?

    <p>Decimal reduction time</p> 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?

    <p>Sterilization</p> Signup and view all the answers

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

    <p>Fomite</p> Signup and view all the answers

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

    <p>Heat</p> Signup and view all the answers

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

    <p>Heat</p> Signup and view all the answers

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

    <p>Heat</p> Signup and view all the answers

    Which of the following is an application of dry heat?

    <p>Incineration</p> Signup and view all the answers

    Which of the following is an application of moist heat?

    <p>Boiling</p> Signup and view all the answers

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

    <p>Autoclaving</p> Signup and view all the answers

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

    <p>Boiling</p> Signup and view all the answers

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

    <p>Pasteurization</p> Signup and view all the answers

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

    <p>Pasteurization</p> 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?

    <p>Thermal death time</p> Signup and view all the answers

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

    <p>Disinfection</p> Signup and view all the answers

    Which of the following is an example of an antiseptic?

    <p>Hydrogen peroxide</p> Signup and view all the answers

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

    <p>Antisepsis</p> Signup and view all the answers

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

    <p>Fomites</p> 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?

    <p>Sterilization</p> Signup and view all the answers

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

    <p>Bromocresol purple</p> Signup and view all the answers

    At what temperature is the vial incubated after autoclaving?

    <p>35°C</p> Signup and view all the answers

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

    <p>Yellow</p> Signup and view all the answers

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

    <p>Geobacillus stearothermophilus</p> Signup and view all the answers

    Which type of radiation is considered ionizing radiation?

    <p>X-rays</p> Signup and view all the answers

    What is the main effect of ionizing radiation on cells?

    <p>Damages DNA</p> Signup and view all the answers

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

    <p>Killing bacterial endospores</p> Signup and view all the answers

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

    <p>UV radiation damages DNA</p> Signup and view all the answers

    What is the germicidal wavelength of UV radiation?

    <p>100-400 nm 265 nm</p> Signup and view all the answers

    What are membrane filters used for?

    <p>Trapping organisms in pores</p> Signup and view all the answers

    What do HEPA filters remove?

    <p>Microbes</p> Signup and view all the answers

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

    <p>Does not kill bacterial endospores</p> 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?

    <p>Sterilization</p> Signup and view all the answers

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

    <p>Preserve and extend the shelf life of food</p> Signup and view all the answers

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

    <p>It is expensive</p> Signup and view all the answers

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

    <p>Hexylresorcinol</p> 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?

    <p>Hexachlorophene</p> Signup and view all the answers

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

    <p>Triclosan</p> 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?

    <p>Copper</p> Signup and view all the answers

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

    <p>Silver</p> Signup and view all the answers

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

    <p>Copper</p> Signup and view all the answers

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

    <p>Zinc</p> Signup and view all the answers

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

    <p>Surgical scrub</p> Signup and view all the answers

    Which of the following is commonly found in antiseptic mouthwashes?

    <p>Chlorhexidine</p> Signup and view all the answers

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

    <p>Effective in diluted form</p> Signup and view all the answers

    Which chemical is commonly used as an antiseptic and disinfectant?

    <p>Silver</p> Signup and view all the answers

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

    <p>Cannot destroy spores</p> Signup and view all the answers

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

    <p>Povidone-iodine</p> Signup and view all the answers

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

    <p>Detergents</p> Signup and view all the answers

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

    <p>Reduced activity when mixed with soaps</p> Signup and view all the answers

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

    <p>EtOH</p> Signup and view all the answers

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

    <p>Denatures proteins and dissolves lipids</p> Signup and view all the answers

    Which of the following is a characteristic of soaps?

    <p>Work primarily as degerming agents</p> Signup and view all the answers

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

    <p>Benzalkonium chloride</p> Signup and view all the answers

    More Like This

    Microbial Control Methods Quiz
    22 questions

    Microbial Control Method Quiz: What is Pasteurization?

    HopefulGreekArt avatar
    HopefulGreekArt
    Microbial Control Methods and Sterilization
    51 questions

    Microbial Control Methods and Sterilization

    BeneficialThermodynamics avatar
    BeneficialThermodynamics
    Microbial Control Practices
    40 questions

    Microbial Control Practices

    ClearUnderstanding6105 avatar
    ClearUnderstanding6105
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser