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45 terms

Chapter 17

Adaptive Immunity: Specific Defenses of the Host
STUDY
PLAY
What type of immunity results from vaccination?
Artificially acquired active immunity
What type of immunity results from transfer of antibodies from one individual to a susceptible individual by means of injection?
Artificially acquired passive immunity
What type of immunity results from recovery from mumps?
Naturally acquired active immunity
A human's resistance to canine distemper is an example of
Innate immunity
Newborns' immunity due to the transfer of antibodies across the placenta is an example of
Naturally acquired passive immunity
What type of immunity is NOT due to antibodies?
Innate immunity
What type of immunity results from an injection of tetanus toxoid?
Artificially acquired active immunity
Immunity due to injection of an antigen is an example of
Artificially acquired active immunity
CD4+ T cells are activated by
CD4+ and MHC II
Which of the following recognizes antigens displayed on host cells with MHC II
TH cell
The specificity of an antibody is due to
The variable portions of the H and L chains
Which of the following is NOT a characteristic of B cells?
They recognize antigens associated with MHC I
Which of the following is NOT a characteristic of cellular immunity?
B cells make antibodies
Plasma cells are activated by a(n)
Antigen
The antibodies found in mucous, saliva, and tears are
IgA
The antibodies found on B cells are
IgD
The antibodies that can bind large parasites are
IgE
In addition to IgG, the antibodies that can fix complement are
IgM
Large antibodies that agglutinate antigens are
IgM
The most abundant class of antibodies in serum
IgG
In Figure 17.1, which letter on the graph indicates the patient's secondary response to an antigen?
C
The second increase on the first antibody titer
In Figure 17.1, which letter on the graph indicates the patient's response to a second antigen?
E
The stretch of time indicated on the second antibody titer
In Figure 17.1, the arrow at time (d) indicates
Exposure to a new antigen
Which statement is false?
A. The variable region of a heavy chain binds with antigen
B. The variable region of a light chain binds with antigen
C. The Fc region attaches to a host cell
D. The constant region of a heavy chain is the same for all antibodies
E. All of the above statements are true
The constant region of a heavy chain is the same for all antibodies
The best definition of antigen is
A chemical that elicits an antibody response and can combine with these antibodies
The best definition of antibody is
A protein made in response to an antigen that can combine with that antigen
The following events elicit an antibody response. What is the third step?
TH cell recognizes antigen-digest and MHC II
In Figure 17.2, which areas are similar for all IgG antibodies?
c and d
The parallel verticle lines
In Figure 17.2, which areas are different for all IgM antibodies?
a and b
The parallel diagonal lines on the left
In Figure 17.2, which areas represent antigen-binding sites?
a and b
The parallel diagonal lines on the left
In Figure 17.2, what can attach to a host cell?
e
The length of c the verticle line on the left
Figure 17.2 could be any of the following EXCEPT
IgM
The presence of which of the following indicates a current infection rather than a previous infection or vaccination?
IgM
Which of the following destroys virus-infected cells?
CTL
The following events occur in cellular immunity. What is the third step?
TH cells proliferate
Cytokines released by TH1 cells
Activate CD8+ cells to CTLs
Which one of the following causes transmembrane channels in target cells?
Perforin
Patients with an inherited type of colon cancer called familial adenomatous polyposis have a mutation in the gene that codes for
Apoptosis
Thymic selection
Destroys T cells that don't recognize self-molecules of MHC
Which of the following statements about natural killer cells is false?
They are stimulated by an antigen
An antibody's Fc region can be bound by
Macrophages
A Treg cell deficiency could result in
Autoimmunity
Cell death caused by perforin and granzymes is caused by
CTLs
IL-2, produced by TH cells
Stimulates TH cell maturation
Which of the following statements about IL-12 is false?
It causes autoimmune diseases