Gram-Positive Bacteria Quiz
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Questions and Answers

What role do membrane teichoic acids play in Gram-positive bacteria?

  • They facilitate the exchange of genetic material.
  • They act as a barrier against antibiotics.
  • They serve to anchor the underlying cell membrane. (correct)
  • They are responsible for the cell's metabolic processes.
  • Which component is significantly less abundant in the Gram-negative bacterial cell wall compared to the Gram-positive cell wall?

  • Peptidoglycan (correct)
  • Lipopolysaccharides
  • Teichoic acid
  • Outer membrane
  • What is synthesized in place of teichoic acids during phosphate supply limitation in Gram-positive bacteria?

  • Lipoprotein layers
  • Teichuronic acid (correct)
  • Neutral sugars
  • Lipopolysaccharides
  • How do Gram-positive bacteria induce septic shock?

    <p>Similarly to endotoxin pathways used by Gram-negative bacteria.</p> Signup and view all the answers

    Which of the following sugars is NOT included as a subunit of the Gram-positive cell wall?

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

    What primary component of the Gram-positive cell wall gives it a thicker structure compared to Gram-negative bacteria?

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

    Which type of acid is not found in Gram-positive cell walls?

    <p>Lipid A</p> Signup and view all the answers

    What role does the outer membrane serve in Gram-negative bacteria?

    <p>It acts as a barrier against toxic substances.</p> Signup and view all the answers

    Which characteristic is true regarding wall teichoic acids (WTAs) in Gram-positive bacteria?

    <p>They are attached to muramic acid in the peptidoglycan.</p> Signup and view all the answers

    How do bacterial cell walls contribute to pathogenicity?

    <p>They serve as protective barriers against host immune systems.</p> Signup and view all the answers

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