Gram-Negative Bacteria and Active Efflux Pumps Quiz
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Questions and Answers

What is the function of certain proteins in the plasma membranes of Gram negative bacteria?

  • Act as receptors for antibiotics
  • Act as enzymes that break down antibiotics
  • Act as pumps that expel antibiotics (correct)
  • Act as channels for antibiotics to enter the cell
  • Which mechanism contributes to resistance to antibiotics like tetracycline, sulphonamides, and quinolones in Gram negative bacteria?

  • Passive diffusion
  • Active efflux pump (correct)
  • Increased antibiotic uptake
  • Antibiotic degradation enzymes
  • What is the role of the active efflux pump in preventing antibiotics from reaching an effective concentration in Gram negative bacteria?

  • Increasing the production of antibiotics
  • Breaking down antibiotics into harmless substances
  • Expelling antibiotics out of the cell (correct)
  • Facilitating the entry of antibiotics into the cell
  • Which of the following is an example of an antimicrobial agent that acts as an antifungal?

    <p>Amphotericin B</p> Signup and view all the answers

    In the context of antimicrobial agents, what is the function of an antiseptic?

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

    Which type of microorganism can be targeted by an antiviral antimicrobial agent?

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

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