BMS 127 Ch. 16 Adaptive Immunity Flashcards
MHC class II molecules bind to __________ and trigger ____________.
exogenous antigens; helper T cells
Antibodies function to
a. directly destroy foreign organ grafts.
b. mark invading organisms for destruction.
c. kill intracellular viruses.
d. promote cytokine synthesis.
e. stimulate T cell growth.
b. mark invading organisms for destruction.
Rejection of a foreign skin graft is an example of
a. destruction of virus-infected cells.
b. tolerance.
c. antibody-mediated immunity.
d. a secondary immune response.
e. a cell-mediated immune response.
e. a cell-mediated immune response.
An autoantigen is
a. an antigen form normal microbiota.
b. a normal body component.
c. an artificial antigen
d. any carbohydrate antigen.
e. a nucleic acid.
b. a normal body component.
Among the key molecules that mediate cell-mediated cytotoxicity are
a. perforin.
b. immunoglobulins.
c. complement.
d. cytokines.
e. interferons.
a. perforin.
Which of the following lymphocytes predominates in blood?
a. T cells
b. B cells
c. plasma cells
d. memory cells
e. all are about equally prevalent
a. T cells
The major class of immunoglobulin found on the surfaces of the walls of the intestines and airways is secretory
a. IgG.
b. IgM.
c. IgA.
d. IgE.
e. IgD.
c. IgA.
Which cells express MHC class I molecules?
a. red blood cells
b. antigen-presenting cells only
c. neutrophils only
d. all nucleated cells
e. dendritic cells only
d. all nucleated cells
In which of the following sites in the body can B cells be found?
a. lymph nodes
b. spleen
c. red bone marrow
d. intestinal wall
e. all of the above
e. all of the above
Tc cells recognize epitopes only when the latter are held by
a. MHC proteins.
b. B cells.
c. interleukin 2.
d. granzyme.
a. MHC proteins.
MHC class II molecules are found on __________.
antigen-presenting cells
___________ is the term used to describe cellular suicide.
Apoptosis
Lymphocytes with CD8 glycoprotein are ________ T cells.
cytotoxic
__________ secrete immunoglobulin.
Plasma cells
Secretion of antibodies by activated B cells is a form of ___________ immunity.
humoral
