Chapter 22 (II) Quiz (Adaptive Immunity)
Steps in antigen presentation include which of these?
Antigens are digested. Antigen fragments appear on the antigen-presenting cell's surface. Phagocytic antigen-presenting cells engulf pathogens.
Which of the following cells has a CD8 marker?
Cytotoxic T cell
Interleukin I (IL-1) promotes proliferation of which type of lymphocyte?
Helper T cell
First antibody to be secreted during an initial exposure
IgM
_____________________ cells produce and secrete antibodies.
Plasma
Which of the following cells has a Class-I MHC marker in its plasma membrane?
Somatic (body) cell
IgG crosses the placenta between
a mother and a fetus during development
Class II MHC proteins are present in the plasma membrane only when
an antigen-presenting cell has engulfed and is processing an antigen.
The lymphocytes that enter tissues and directly attack antigens
are cytotoxic T Cells
Cytotoxic T cells involved in
cell-mediated immunity
CD8 markers are to ________ T cells as CD4 markers are to ________ T cells.
cytoxic; helper
Another term for antibodies is
immunoglobulins.
IgE attach to and sensitize
mast cells and basophils
IgG are most abundant and are responsible for
resistance against many viruses, bacteria, and bacterial toxins are
IgD are found on the surface of B cells and
that may activate antibody production
___________________ immunity develops when an individual receives an immunization/vaccination.
Artificially acquired active
Found mainly in exocrine gland secretions
IgA
Activates B cells
IgD
Provides protection against parasitic worms
IgE
Most abundant antibody
IgG
Anti-A and Anti-B antibodies of the ABO blood groups belong to which class of antibodies?
IgM Anibodies class
During the primary response, which antibody peaks sooner? During the secondary response, which antibody level is higher?
IgM; IgG
___________________ is the ability to carry out adaptive immune responses.
Immunocompetence
A crime scene investigator found that a biological fluid sample contains a large amount of IgA-type antibody. This fluid is probably
Tears
IgE sensitizes cells to
allergens
When an antigen is bound to a Class I MHC molecule, it can stimulate a ________ cell.
cytotoxic T
Antigen-presenting cells (APCs) process
exogenous antigens.
B cells are primarily activated by the activities of
helper T cells.
Martha had a heart transplant. In order to keep her body from rejecting the transplant she takes
immunosuppressive drugs.
where do B cells develop immunocompetence
in the red bone marrow.
Cytotoxic T cells respond to foreign antigens presented by
infected body cells.
Immunity that is genetically determined and present at birth is called ________ immunity.
innate
Hormones that regulate the activity of B cells and T cells and enhance nonspecific defense are called
interleukins
Immunity that results from antibodies that pass through the placenta from mother to fetus is called ________ immunity.
naturally acquired passive
The first line of cellular defense against pathogens are the
phagocytes.
Helper T cells do all of the following except
provide a rapid response to a future exposure to the antigen.
what is true of the secondary response of humoral immunity
results in much higher antibody titers than in the primary response. results in much quicker rise in antibody titers. produces more effective antibodies. depends on memory B cells.
Memory cells do not proliferate/differentiate during
the first exposure to a foreign antigen.
Passive immunity is produced by
the transfer of antibodies.
Helper T cells do all of the following
trigger B-cell division, plasma cell maturation, and antibody production. enhance production of memory and cytotoxic T cells. attract macrophages to the affected area. enhance nonspecific defenses.
All of the following are true of the secondary response of humoral immunity except that it
weakens quickly because memory B cells only survive for a year or two.