Lecture 21C
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Questions and Answers

What distinguishes immunity from nonspecific resistance?

  • T cells and B cells
  • Active immunity and passive immunity
  • Antibodies and antigens
  • Specificity and memory (correct)

Which type of immunity involves T cells directly attacking foreign or diseased host cells?

  • Active immunity
  • Cellular (cell-mediated) immunity (correct)
  • Passive immunity
  • Humoral (antibody-mediated) immunity

How does humoral immunity differ from cellular immunity?

  • It is mediated by B cells and antibodies (correct)
  • It is a temporary response
  • It works against intracellular pathogens
  • It directly attacks pathogens

What distinguishes natural active immunity from artificial active immunity?

<p>Source of exposure to pathogens (A)</p> Signup and view all the answers

Which class of immunity involves acquiring antibodies from another source temporarily?

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

What is the role of antigens in triggering an immune response?

<p>They initiate the immune response (A)</p> Signup and view all the answers

Which type of immunity works against pathogens residing inside human cells?

<p>Cellular (cell-mediated) immunity (D)</p> Signup and view all the answers

What is the main difference between natural passive immunity and artificial passive immunity?

<p>The source of the acquired antibodies. (B)</p> Signup and view all the answers

In which form of immunity are antibodies already manufactured and do not induce antibody production in the recipient?

<p>Artificial passive immunity. (B)</p> Signup and view all the answers

Which type of immunity involves antibodies that indirectly destroy a pathogen?

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

What distinguishes cellular immunity from humoral immunity?

<p>Cellular immunity works against extracellular pathogens, while humoral immunity works against intracellular pathogens. (C)</p> Signup and view all the answers

Which form of immunity is characterized by the production of antibodies by the body?

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

What type of immunity can only work against extracellular stages of infectious microorganisms?

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

Which characteristic distinguishes active immunity from passive immunity?

<p>Duration of protection (C)</p> Signup and view all the answers

What is the main difference between natural active and artificial active immunity?

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

In which type of immunity do T cells directly attack and destroy foreign or diseased host cells?

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

What is the main characteristic of antigens that trigger an immune response?

<p>$10,000 amu molecular weight (A)</p> Signup and view all the answers

What is the function of cellular (cell-mediated) immunity?

<p>Destroy foreign cells or diseased host cells directly (D)</p> Signup and view all the answers

Which type of immunity rids the body of pathogens residing inside human cells?

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

What distinguishes active humoral immunity from passive humoral immunity?

<p>Source of antibodies (D)</p> Signup and view all the answers

Which form of immunity involves introducing antibodies for treatment or prevention?

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

In which class of immunity does the body make its antibodies permanently?

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

What type of immunity is mediated by antibodies that indirectly destroy pathogens?

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

What characterizes antigens that trigger an immune response?

<p><strong>Proteins</strong> with large molecular weights over 10,000 amu (A)</p> Signup and view all the answers

Antibodies that are already made and do not induce further antibody production in the recipient are associated with which type of immunity?

<p><strong>Artificial passive immunity</strong> (A)</p> Signup and view all the answers

What distinguishes cellular (cell-mediated) immunity from humoral (antibody-mediated) immunity?

<p>Cellular immunity involves T cells directly attacking pathogens, while humoral immunity involves B cells producing antibodies. (D)</p> Signup and view all the answers

Which type of immunity rids the body of pathogens residing inside human cells?

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

What characterizes antigens that trigger an immune response?

<p>Large molecular weights of over 10,000 amu (C)</p> Signup and view all the answers

Which form of immunity involves acquiring antibodies from another source temporarily?

<p>Natural passive immunity (A)</p> Signup and view all the answers

What distinguishes active humoral immunity from passive humoral immunity?

<p>Active humoral immunity involves the body making its own antibodies permanently, while passive humoral immunity acquires antibodies from another source temporarily. (B)</p> Signup and view all the answers

Which class of immunity involves introducing antibodies for treatment or prevention?

<p>Artificial passive immunity (D)</p> Signup and view all the answers

What is the main characteristic of antigens that trigger an immune response?

<p>They have large molecular weights (D)</p> Signup and view all the answers

'Antibodies that are already made and do not induce further antibody production in the recipient are associated with which type of immunity?'

<p>'Natural passive immunity' (B)</p> Signup and view all the answers

What distinguishes cellular (cell-mediated) immunity from humoral (antibody-mediated) immunity?

<p>The ability to work against pathogens residing inside human cells in cellular immunity but not in humoral immunity (D)</p> Signup and view all the answers

What characteristic distinguishes natural active immunity from artificial active immunity?

<p>The method of acquiring antibodies (B)</p> Signup and view all the answers

Which type of immunity is mediated by antibodies that indirectly destroy pathogens?

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

What is the main characteristic of antigens that trigger an immune response?

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

Which form of immunity involves acquiring antibodies from another source temporarily?

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

What distinguishes natural passive immunity from artificial passive immunity?

<p>The method of antibody acquisition (D)</p> Signup and view all the answers

What distinguishes cellular (cell-mediated) immunity from humoral (antibody-mediated) immunity?

<p>The ability to work against extracellular pathogens in cellular immunity but not in humoral immunity (B)</p> Signup and view all the answers

Which type of immunity can only work against extracellular stages of infectious microorganisms?

<p>Humoral (antibody-mediated) immunity (C)</p> Signup and view all the answers

Cellular (cell-mediated) immunity involves T cells directly attacking and destroying ______ cells

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

Humoral (antibody-mediated) immunity is mediated by antibodies that indirectly destroy a ______

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

Active humoral immunity is characterized by the body making its own antibodies ______

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

Passive humoral immunity involves acquiring antibodies from ______ source

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

Antigen is any molecule that triggers an immune ______

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

Natural active immunity involves exposure to a ______

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

Artificial passive immunity involves introducing antibodies for ______

<p>treatment/prevention</p> Signup and view all the answers

In cellular (cell-mediated) immunity, T cells attack pathogens residing inside ______ cells

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

Memory in immunity refers to the body reacting quickly upon re-exposure to the same ______

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

_______ immunity is characterized by T cells directly attacking and destroying foreign or diseased host cells

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

Humoral (antibody-mediated) immunity is mediated by antibodies that indirectly destroy a _______

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

_______ immunity involves acquiring antibodies from another source temporarily

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

_______ immunity involves introducing antibodies for treatment or prevention

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

_______ immunity involves exposure to a pathogen

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

_______ immunity is characterized by the body making its own antibodies forever

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

Antigen is any molecule that triggers an immune _______

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

_______ immunity involves T cells directly attacking and destroying foreign cells or diseased host cells

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

_______ immunity is directed against a particular pathogen

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

Cellular immunity involves B cells attacking and destroying foreign cells or diseased host cells.

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

Humoral immunity can work against pathogens residing inside human cells.

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

Passive humoral immunity involves acquiring antibodies from another source temporarily.

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

Artificial active immunity involves exposure to a pathogen.

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

Antigens are large molecular weights of over 10,000 amu.

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

Natural passive immunity involves acquiring antibodies that are already made and do not induce further antibody production in the recipient.

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

Active humoral immunity is characterized by the body acquiring antibodies forever.

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

The main function of cellular (cell-mediated) immunity is mediated by antibodies that indirectly destroy pathogens.

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

Natural active immunity involves introducing antibodies for treatment or prevention.

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

Cellular immunity is primarily mediated by B cells.

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

Humoral immunity can work against pathogens residing inside human cells.

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

Artificial active immunity involves exposure to a pathogen.

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

Natural passive immunity involves acquiring antibodies from someone else.

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

Antigens with large molecular weights of over 10,000 amu can trigger an immune response.

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

Active humoral immunity involves the body making its own antibodies forever.

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

Passive humoral immunity involves antibodies that are already made and do not induce further antibody production in the recipient.

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

Memory in immunity refers to the body reacting slowly upon re-exposure to the same pathogen.

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

Natural active immunity involves exposure to a pathogen.

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

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