Disinfectants and Their Properties Quiz
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Questions and Answers

What type of phage allows phages to take a bit of the adjacent bacterial DNA?

  • Virulent phage
  • Specialized transduction
  • Lytic phage
  • Temperate phage (correct)
  • Which process describes the spread of antibiotic resistance genes facilitated by mobile DNA segments?

  • Transposons (correct)
  • Mutation
  • Genetic Variation
  • Transduction
  • What is the term for destroying endospores of Clostridium botulinum?

  • Degerming
  • Antiseptic
  • Disinfection
  • Commercial sterilization (correct)
  • Which agent inhibits the growth of bacteria without killing them?

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

    Which of the following is true about alcohols used as disinfectants?

    <p>They can kill bacteria and fungi but not endospores or naked viruses</p> Signup and view all the answers

    In genetic transfer among bacteria, which process involves cells becoming immune to reinfection by the same phage?

    <p>Lysogenic conversion</p> Signup and view all the answers

    Which of the following heavy metals exhibits oligodynamic action and is used as a disinfectant?

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

    What is the term for the destruction of harmful microorganisms in inanimate objects?

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

    What is the main advantage of quaternary ammonium compounds (Quats) as antimicrobial agents?

    <p>They function as cationic detergents</p> Signup and view all the answers

    What is the difference between resident flora and transient flora in the human body?

    <p>Resident flora are fixed types, regularly found, while transient flora temporarily inhabit the body</p> Signup and view all the answers

    What factors contribute to eliminating non-resident flora from the skin?

    <p>Presence of lysozyme</p> Signup and view all the answers

    Which antimicrobial agent is known for its oligodynamic action and effectiveness against bacteria and fungi?

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

    What advantage do phenolics have as antimicrobial agents?

    <p>They persist for a long time</p> Signup and view all the answers

    Which halogen is found in tincture of iodine?

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

    How does formaldehyde function as a disinfectant?

    <p>By denaturing proteins</p> Signup and view all the answers

    What is the advantage of using glutaraldehyde over formaldehyde as a sterilizing agent?

    <p>It is less irritating and more effective</p> Signup and view all the answers

    Which antimicrobial agent is known for being a sporicide at higher temperatures?

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

    How does ethylene oxide act as a gaseous sterilizer?

    <p>By replacing functional groups with alkyl groups</p> Signup and view all the answers

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