Microbial Growth Control and Antimicrobial Agents Quiz
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Questions and Answers

Which type of antimicrobial agent is safe to be applied to the skin and mucous membrane?

  • Gases
  • Antiseptics (correct)
  • Antibiotics
  • Disinfectants
  • What is the primary difference between disinfectants and antiseptics?

  • Disinfectants kill microorganisms, but antiseptics do not.
  • Disinfectants are used on inanimate objects, while antiseptics are used on living organisms. (correct)
  • Disinfectants are safe for application to living tissues, while antiseptics are not.
  • Disinfectants are natural in origin, while antiseptics are synthetic.
  • Which of the following is an example of a disinfectant?

  • Chlorine (correct)
  • Iodine solution
  • Silver nitrate
  • Alcohols
  • What is the main characteristic of antibiotics as antimicrobial agents?

    <p>They are used in the treatment of infectious diseases of plants and animals.</p> Signup and view all the answers

    Why are disinfectants not safe for application to living tissues?

    <p>They can cause harm or irritation to living tissues.</p> Signup and view all the answers

    What distinguishes antiseptics from disinfectants?

    <p>Antiseptics are safe for application to mucous membranes, while disinfectants are not.</p> Signup and view all the answers

    What is the primary purpose of preservatives in foods?

    <p>To inhibit the growth of microorganisms</p> Signup and view all the answers

    According to the information provided, which of the following substances is safe for drinking?

    <p>Sodium benzoate</p> Signup and view all the answers

    In the context of antibiotic development, what type of substance fell outside the traditional definition of an antibiotic?

    <p>Synthetic analogues or derivatives</p> Signup and view all the answers

    What was the significance of sulphonamides in the development of antibiotics?

    <p>They predated penicillin by about 10 years</p> Signup and view all the answers

    What became a major problem during the remaining years of the 20th century in relation to antibiotic development?

    <p>Antibiotic resistance</p> Signup and view all the answers

    Which class do linezolid and quinupristin/dalfopristin (Synercid) belong to?

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

    What is the mechanism of action of linezolid and quinupristin/dalfopristin?

    <p>Inhibition of protein synthesis</p> Signup and view all the answers

    During which period did the international pharmaceutical industry develop new antibiotics steadily?

    <p>1950s - 1970s</p> Signup and view all the answers

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