Human Immunity: Resistance to Infection
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Questions and Answers

What is the ability of the human body to resist infection and damage called?

  • Innate response
  • Resistance
  • Adaptive defense
  • Immunity (correct)
  • What type of immunity results from general processes that provide resistance to specific disease organisms?

  • Innate immunity (correct)
  • Specific immunity
  • Adaptive immunity
  • Acquired immunity
  • What is the term for the process by which white blood cells and macrophages engulf and destroy invading organisms?

  • Phagocytosis (correct)
  • Pinocytosis
  • Humoral immunity
  • Cell-mediated immunity
  • What is the term for the specific immunity developed against individual invading agents such as bacteria, viruses, and toxins?

    <p>Adaptive immunity (C)</p> Signup and view all the answers

    What is the term for the proteins produced by the immune system to attack and destroy specific invading organisms or toxins?

    <p>Immunoglobulins (A)</p> Signup and view all the answers

    What is the term for the immune system that forms antibodies and/or activated lymphocytes to attack and destroy specific invading organisms or toxins?

    <p>Adaptive immune system (D)</p> Signup and view all the answers

    What percentage of plasma proteins do immunoglobulins typically constitute?

    <p>20% (A)</p> Signup and view all the answers

    What is the term for the designated end of each light and heavy chain in an immunoglobulin?

    <p>Variable region (C)</p> Signup and view all the answers

    Which class of antibodies has 10 binding sites and is effective in protecting the body against invaders?

    <p>IgM (B)</p> Signup and view all the answers

    What determines the biological properties of an antibody in tissues, such as adherence to specific structures and passage through membranes?

    <p>Constant portion (C)</p> Signup and view all the answers

    Which class of antibodies is especially involved in allergy and constitutes only a small percentage of the antibodies?

    <p>IgE (A)</p> Signup and view all the answers

    What percentage of the antibodies of a normal person does IgG constitute?

    <p>75% (A)</p> Signup and view all the answers

    What is the result of a person's body responding to a foreign antigen?

    <p>The person develops either antibodies or activated T cells (B)</p> Signup and view all the answers

    How can temporary immunity be achieved without injecting an antigen?

    <p>By transfusing antibodies or activated T cells from someone else (D)</p> Signup and view all the answers

    How long do antibodies last in the body of the recipient?

    <p>2 to 3 weeks (C)</p> Signup and view all the answers

    What is the term for the transfusion of antibodies or T lymphocytes to confer immunity?

    <p>Passive immunity (C)</p> Signup and view all the answers

    What is the duration of activated T cells transfused from an animal?

    <p>A few hours to a few days (C)</p> Signup and view all the answers

    What is the main function of antibodies in the human body?

    <p>To protect the body against invading agents (C)</p> Signup and view all the answers

    What is the process called when antibodies bind multiple large particles with antigens on their surfaces into a clump?

    <p>Agglutination (B)</p> Signup and view all the answers

    What is the term for the molecular complex of soluble antigen and antibody?

    <p>Precipitation (D)</p> Signup and view all the answers

    What is the term for the process by which antibodies cover the toxic sites of the antigenic agent?

    <p>Neutralization (A)</p> Signup and view all the answers

    What is the system that antibodies activate to destroy invading agents?

    <p>Complement system (B)</p> Signup and view all the answers

    What type of immunity is being discussed in the passage?

    <p>Active immunity (C)</p> Signup and view all the answers

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