Mastering Medical Microbiology
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Questions and Answers

Which of the following statements about Staphylococcus is true?

  • Staphylococcus can only grow in the presence of oxygen
  • Staphylococcus is typically found in the gastrointestinal tract
  • Staphylococcus is a gram-negative bacterium
  • Staphylococcus can grow at high salt concentrations (correct)

    • What is the size range of Staphylococcus bacteria?

  • 0.5 – 1.5 μm diameter (correct)
  • 2 – 3 μm diameter
  • 0.1 – 0.5 μm diameter
  • 1 – 2 μm diameter

    • Which of the following is a characteristic of Staphylococcus aureus?

  • It is catalase negative
  • It is a facultative anaerobe (correct)
  • It can only grow at low salt concentrations
  • It is typically found in the gastrointestinal tract

    • Where is Staphylococcus aureus commonly found in the human body?

    <p>Nasal cavity</p> Signup and view all the answers

    What does the catalase enzyme in Staphylococcus do?

    <p>Converts H2O2 to H2O and O2</p> Signup and view all the answers

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