Animation Cell-Mediated Immunity

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What is the initial step in the Antibody-Mediated Immune Response?

Activation of B cells by specific antigen (correct)

Activation of Helper T cells by specific antigen

Formation of antigen-antibody complex

Secretion of antibodies by plasma cells

Which type of cells undergo clonal selection into plasma cells and memory B cells?

T cells

Antigen-presenting cells

Helper T cells

B cells (correct)

What is the main function of plasma cells in the immune response?

Activation of B cells

Costimulation of Helper T cells

Formation of antigen-antibody complex

Production of antibodies specific to antigens (correct)

Which class of antibodies is involved in Type I hypersensitivity reactions such as allergies?

IgE Signup and view all the answers

What is the role of costimulation by Helper T cell cytokine in the Antibody-Mediated Immune Response?

Producing a more intense response in B cells Signup and view all the answers

Which type of cells can respond to unprocessed antigens in the immune response?

B cells Signup and view all the answers

What is the main function of antibodies in immobilizing bacteria?

Connect bacteria to each other, facilitating phagocytosis Signup and view all the answers

How do antibodies enhance phagocytosis?

Attract phagocytes to antigen-antibody complex Signup and view all the answers

In the secondary immune response, what triggers a greater antibody level in the blood?

Activation of memory cells from subsequent exposure to the same antigen Signup and view all the answers

What is the primary function of antibodies in activating the complement system plasma proteins?

Neutralize the antigen Signup and view all the answers

What initiates the immune response in the primary response to an antigen?

Immune response triggered by first exposure to specific antigen Signup and view all the answers

How does the basis for immunization by vaccination work?

Triggering memory cell clonal selection to antigen without causing illness Signup and view all the answers

What is the main function of plasma cells in the immune system?

Produce and secrete specific antibodies Signup and view all the answers

Which type of immunity is mainly effective against extracellular pathogens like viruses, bacteria, and fungi?

Antibody-mediated immunity Signup and view all the answers

What happens when activated B cells transform into plasma cells?

They synthesize and secrete specific antibodies Signup and view all the answers

In the immune response, what is the role of memory B cells?

Provide long-term immunity upon re-exposure to antigens Signup and view all the answers

Which cells from the clone of lymphocytes differentiate to carry out the immune response by destroying or inactivating antigen-bearing substances?

Effector cells Signup and view all the answers

What kind of immune response do activated B cells transform into plasma cells generate?