Sterilization and Disinfection Definitions
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Questions and Answers

What is the mechanism of action for killing organisms by dry heat?

  • Protein denaturation, oxidative damage, and toxic effects of elevated levels of electrolytes (correct)
  • Coagulation and denaturation of enzymes and structural proteins
  • Incineration
  • Red heat

    • Which physical method involves holding materials in the flame of a Bunsen burner till they become red hot?

  • Incineration
  • Hot air oven
  • Flaming
  • Red heat (correct)

    • Which type of heat kills microorganisms by coagulation and denaturation of their enzymes and structural proteins?

  • Red heat
  • Moist heat (correct)
  • Dry heat
  • Flaming

    • What factors influence sterilization by heat?

    <p>Nature of heat, temperature and time, number of microorganisms present, characteristics of the organisms (C)</p> Signup and view all the answers

    What physical method involves passing materials through the flame of a Bunsen burner without allowing them to become red hot?

    <p>Flaming (C)</p> Signup and view all the answers

    What is the primary mechanism of action for killing microorganisms by dry heat?

    <p>Protein denaturation and oxidative damage (B)</p> Signup and view all the answers

    Which physical method involves holding materials in the flame of a Bunsen burner till they become red hot?

    <p>Red heat (C)</p> Signup and view all the answers

    What type of material can be sterilized using the physical method of incineration?

    <p>All of the above (D)</p> Signup and view all the answers

    Which factor does not influence sterilization by heat?

    <p>Elevated levels of electrolytes (B)</p> Signup and view all the answers

    What is the primary difference between dry heat and moist heat sterilization?

    <p>Moist heat coagulates and denatures enzymes, while dry heat relies on red heat (D)</p> Signup and view all the answers

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