Bactericidal, Fungicidal, Algicidal, and Viricidal Agents Quiz
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Questions and Answers

Which factor affects the efficiency of a disinfectant related to the type and level of microbial contamination?

  • pH
  • Bioburden (correct)
  • Concentration
  • Temperature
  • What was used by Joseph Lister in 1867 to reduce the incidence of infections after surgical procedures?

  • Ethanol
  • Hydrogen peroxide
  • Iodine
  • Phenol (correct)
  • Which type of agents inhibit the growth of pathogens either temporarily or permanently?

  • Viricidal agents
  • Fungicidal agents
  • Microbistatic agents (correct)
  • Bactericidal agents
  • How can obligate anaerobes be killed?

    <p>Oxygen exposure</p> Signup and view all the answers

    Which factor affects the efficiency of a disinfectant based on the time the disinfectant must remain in contact with organisms to kill them?

    <p>Contact time</p> Signup and view all the answers

    What does chemical disinfection refer to?

    <p>Inhibiting microbial growth with chemicals</p> Signup and view all the answers

    What is the physical nature of the object being disinfected an important factor for?

    <p>Efficacy of the process</p> Signup and view all the answers

    'Obligate anaerobes can be killed by exposing them to what?' This statement is an example of:

    <p>'Oxygen' misconception</p> Signup and view all the answers

    'The effectiveness of phenol as a disinfectant was demonstrated by Joseph Lister in 1867.' This statement best relates to:

    <p>'Bactericidal agents'</p> Signup and view all the answers

    'The organic load that is present; that is, the presence of organic matter (e.g., feces, blood, vomitus, and pus) on the materials being treated' - What is this factor called?

    <p>'Bioburden'</p> Signup and view all the answers

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