Toxins: Exotoxins and Endotoxins
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Questions and Answers

What is the primary function of membrane-damaging toxins such as streptolysin O?

  • To trigger an immune response
  • To form pores in membranes (correct)
  • To inhibit protein synthesis
  • To hydrolyze phospholipids of membrane

    • What is the primary function of phospholipases?

  • To form pores in membranes
  • To trigger an immune response
  • To hydrolyze phospholipids of membrane (correct)
  • To inhibit protein synthesis

    • What is the primary function of exfoliatin from Staphylococcus aureus?

  • To lyse red blood cells
  • To destroy material that binds together skin layers (correct)
  • To trigger an immune response
  • To destroy connective tissue

    • What is the primary function of endotoxin?

    <p>To trigger an inflammatory response</p> Signup and view all the answers

    What is a characteristic of exotoxins?

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

    What is a potential consequence of the immune response?

    <p>Inflammation leading to tissue damage</p> Signup and view all the answers

    What type of toxins are produced by GRAM+ bacteria?

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

    What is the main difference between A-B toxins and Membrane Damaging Toxins?

    <p>The mechanism of action</p> Signup and view all the answers

    What is the result of bacterial lysis in relation to exotoxins?

    <p>Exotoxins are secreted or leak into tissue</p> Signup and view all the answers

    What is the characteristic of Neurotoxins?

    <p>They damage the nervous system</p> Signup and view all the answers

    What is the effect of antibodies on A-B toxins?

    <p>They have no effect on A-B toxins</p> Signup and view all the answers

    What is the name of the bacteria that produces exotoxins that cause tetanus?

    <p>Clostridium tetani</p> Signup and view all the answers

    What is the primary mechanism by which Mycobacterium tuberculosis causes disease?

    <p>Invading host tissues and producing toxins</p> Signup and view all the answers

    What is toxigenicity?

    <p>The ability of bacteria to form toxins</p> Signup and view all the answers

    Which of the following bacteria is responsible for producing toxins that are ingested through contaminated food?

    <p>Clostridium botulinum</p> Signup and view all the answers

    What is the primary mechanism by which Vibrio cholera causes disease?

    <p>Colonizing mucous membranes and producing toxins</p> Signup and view all the answers

    What is the function of siderophores in bacterial pathogenesis?

    <p>To capture iron from the host</p> Signup and view all the answers

    Which of the following bacteria is responsible for typhoid fever?

    <p>Salmonella typhi</p> Signup and view all the answers

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