Exploring MSCRAMMs and Protein A
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Questions and Answers

Which part of staphylococcus has a high affinity for the FC receptor on lgG molecules and complement?

  • Fab
  • MSCRAMMs
  • Protein A (correct)
  • FC portion
  • What is the function of Protein A?

  • To recognize antigens
  • To produce coagglutination
  • To attach to the Fc receptor (correct)
  • To inhibit phagocytosis
  • What is the role of the FC portion of an antibody?

  • It is at the bottom
  • It attaches to the white blood cells (correct)
  • It inhibits phagocytosis
  • It recognizes antigens of the organisms
  • What is the function of Fab in an antibody?

    <p>To recognize antigens</p> Signup and view all the answers

    Which strains of staphylococcus can produce virulence Gamma?

    <p>Staph epidermidis and staph haemolyticus</p> Signup and view all the answers

    What is the function of Panton Valentine Leukocidin (PVL)?

    <p>To inhibit phagocytosis</p> Signup and view all the answers

    What is the effect of Panton Valentine Leukocidin (PVL) on neutrophils?

    <p>It inhibits phagocytosis</p> Signup and view all the answers

    What can be seen in coagulation negative staphylococcus?

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

    What is the function of coagglutination in the laboratory?

    <p>To produce coagglutination</p> Signup and view all the answers

    What happens to the granules inside neutrophils when Panton Valentine Leukocidin (PVL) is present?

    <p>They are released</p> Signup and view all the answers

    Which type of coagulase is located at the cell wall surface and binds nonenzymatically to fibrinogen and platelets, leading to aggregation of the bacteria?

    <p>Bound coagulase</p> Signup and view all the answers

    Which type of coagulase is detected using the slide coagulase test and may coat neutrophils, preventing phagocytosis?

    <p>Alpha coagulase</p> Signup and view all the answers

    Which type of coagulase is detected by the tube coagulase test and activates the differentiation of prothrombin to thrombin?

    <p>Free coagulase</p> Signup and view all the answers

    Which exotoxin is toxic to red blood cells, white blood cells, hepatocytes, platelets, and macrophages, and disrupts smooth muscle in blood vessels?

    <p>Alpha toxin</p> Signup and view all the answers

    Which exotoxin hydrolyzes membrane phospholipids and causes cell lysis?

    <p>Beta toxin</p> Signup and view all the answers

    Which exotoxin causes nonspecific membrane toxicity to other mammalian cells and allows proliferation of white blood cells, T cells, and antigen-presenting cells?

    <p>Delta toxin</p> Signup and view all the answers

    Which type of enterotoxin is associated with staphylococcal-related food poisoning and is resistant to stomach and intestinal enzymes?

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

    Which type of enterotoxin is associated with enterocolitis and could produce pseudomembranes in the stomach?

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

    Which type of enterotoxin is commonly found in milk products and has an emetic effect, causing vomiting?

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

    Which type of enterotoxin is associated with pseudomembranous enterocolitis?

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

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