S aureus Exotoxin-mediated Diseases Quiz
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Questions and Answers

Which bacterial species is most commonly associated with cystitis in patients?

  • Enterococcus faecalis
  • S saprophyticus (correct)
  • Escherichia coli
  • S aureus

    • What is the main mechanism by which most S aureus strains are resistant to conventional penicillin?

  • Increased efflux pump activity
  • Synthesis of penicillinase enzyme (correct)
  • Production of penicillin-binding proteins
  • Reduced membrane permeability

    • Which gene is responsible for conferring methicillin resistance in S aureus?

  • MecA (correct)
  • Beta-lactamase
  • PenA
  • VanA

    • What percentage of healthcare-associated infections caused by S aureus in the United States are due to MRSA?

    <p>40%</p> Signup and view all the answers

    Which bacteria transferred the vanA gene to VRSA strains, contributing to their vancomycin resistance?

    <p>Enterococcus faecalis</p> Signup and view all the answers

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