Causes of Respiratory and Systemic Infections Quiz
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Questions and Answers

Which enzyme produced by Staphylococcus is responsible for breaking down DNA?

  • DNase (correct)
  • Catalase
  • Lipase
  • Coagulase
  • Which toxin produced by Staphylococcus causes damage to gastrointestinal epithelia?

  • Toxic shock toxin
  • Exfoliative toxin
  • Enterotoxin (correct)
  • Hemolysin
  • Among the enzymes produced by Staphylococcus, which one is responsible for digesting fatty/oily cells in the skin?

  • Lipase (correct)
  • Catalase
  • Coagulase
  • DNase
  • Which type of toxin produced by Staphylococcus is released by the bacteria while still alive, causing inflammatory responses at a site remote from infection?

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

    Which virulence factor of Acinetobacter enhances attachment to host cells?

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

    What is a significant difference between Acinetobacter and Helicobacter pylori in terms of antibiotic resistance?

    <p>Both are resistant to many antibiotics.</p> Signup and view all the answers

    Which Gram negative bacteria mentioned in the text is predominantly spiral in shape?

    <p>Helicobacter pylori</p> Signup and view all the answers

    What type of infection can be caused by Helicobacter pylori?

    <p>Peptic ulcer disease</p> Signup and view all the answers

    Why is Helicobacter pylori not a vaccine-preventable infection?

    <p>Its oral-fecal transmission route limits the effectiveness of vaccines.</p> Signup and view all the answers

    Which enzyme produced by Staphylococcus is responsible for the conversion of fibrinogen to fibrin, allowing the formation of blood clots around the bacteria?

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

    Which of the following toxins is commonly produced by Staphylococcus aureus and has the ability to cause food poisoning?

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

    In the context of skin infections, which statement regarding Staphylococcus epidermidis is true?

    <p>It is part of the normal skin flora.</p> Signup and view all the answers

    Which of the following statements about Staphylococcus aureus skin infections is incorrect?

    <p>Catheters are not involved in the transmission of S. aureus.</p> Signup and view all the answers

    Which of the following characteristics makes Staphylococcus aureus particularly concerning in healthcare settings?

    <p>It causes infections that are often resistant to antibiotics.</p> Signup and view all the answers

    What is the function of Streptokinase as mentioned in the text?

    <p>It dissolves blood clots so that bacteria can spread</p> Signup and view all the answers

    Which virulence factor enables Streptococcus bacteria to evade the immune system?

    <p>Hyaluronic acid</p> Signup and view all the answers

    How do Streptolysin O and S contribute to organ failure and shock as described in the text?

    <p>They break down RBCs, WBCs, and damage internal organs</p> Signup and view all the answers

    Which group of individuals is at higher risk for disease caused by Streptococcus pneumoniae according to the text?

    <p>Elderly, toddlers, smokers, and immunocompromised patients</p> Signup and view all the answers

    What is a key characteristic of Streptococcus pneumoniae colonization in the majority of people as stated in the text?

    <p>It commonly colonizes the upper respiratory tract</p> Signup and view all the answers

    Which bacterial species is associated with a higher risk of disease in the heart, urinary tract, and colon?

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

    Which bacterial species is known for its ability to replicate within neutrophils?

    <p>Neisseria gonorrhoeae</p> Signup and view all the answers

    Which bacterial species is commonly transmitted by close contact with an infected person through respiratory droplets?

    <p>Neisseria meningitidis</p> Signup and view all the answers

    Which bacterial species does NOT have a polysaccharide capsule, making it vulnerable to the immune system?

    <p>Neisseria gonorrhoeae</p> Signup and view all the answers

    Which bacterial species has pili present and is vaccine preventable?

    <p>Neisseria gonorrhoeae</p> Signup and view all the answers

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