Immune System Response
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What role do some T cells play in enhancing the innate immune response?

  • Producing antibodies that mark pathogens for attack
  • Providing a rapid, pre-existing response to infection
  • Recognizing a wide repertoire of foreign substances
  • Secreting cytokines that increase the ability of macrophages to kill ingested microbes (correct)

    • What is a key difference between the innate and adaptive immune responses?

  • The ability to recognize a wide repertoire of foreign substances, with innate responses being more limited (correct)
  • The reliance on lymphocytes, with adaptive responses being more dependent on them
  • The speed of the response, with innate responses being slower
  • The ability to improve during a response, with innate responses being more effective initially

    • What is the role of antibodies in the innate immune response?

  • Marking pathogens for attack by complement and serving as a potent activator of the attack (correct)
  • Producing cytokines that increase the ability of macrophages to kill ingested microbes
  • Recognizing a wide repertoire of foreign substances
  • Providing a rapid, pre-existing response to infection

    • What is an example of innate immunity that is not based on lymphocytes?

    <p>The immune system of insects</p> Signup and view all the answers

    What is the main advantage of adaptive immunity over innate immunity?

    <p>Ability to recognize a wider repertoire of foreign substances</p> Signup and view all the answers

    What is the result of antibodies binding to pathogens in the innate immune response?

    <p>Marking pathogens for attack by complement and serving as a potent activator of the attack</p> Signup and view all the answers

    What is the role of dendritic cells in the immune response?

    <p>To present antigens to T-cells</p> Signup and view all the answers

    In which part of the cell are endogenous antigens degraded?

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

    What is displayed on the cell surface as a result of antigen processing?

    <p>Antigenic peptides complexed with class II MHC molecules</p> Signup and view all the answers

    What is a characteristic of the inflammatory response?

    <p>Inflammation and swelling at the site of infection</p> Signup and view all the answers

    What is the primary function of the innate immune system?

    <p>To provide a first line of defense against infection</p> Signup and view all the answers

    What is a dysfunction of the immune system that can lead to infection?

    <p>Loss of immune function</p> Signup and view all the answers

    What is the primary function of phagocytic cells, such as macrophages and neutrophils?

    <p>To engulf and digest foreign particles and microorganisms</p> Signup and view all the answers

    What determines the specificity of a lymphocyte's receptor?

    <p>The specific receptor's binding properties before antigen exposure</p> Signup and view all the answers

    Which component of the immune system is uniform in all members of a species?

    <p>Innate immunity</p> Signup and view all the answers

    What is the result of antigen binding to its specific receptor on a lymphocyte?

    <p>The cell proliferates into a clone of cells with the same immunologic specificity</p> Signup and view all the answers

    What is the primary function of the innate immune system?

    <p>To provide the first line of defense against infection</p> Signup and view all the answers

    What is the characteristic of adaptive immunity that distinguishes it from innate immunity?

    <p>It does not come into play until there is an antigenic challenge</p> Signup and view all the answers

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