Question 1

In addition to IgG, the antibodies that can fix complement are

Accepted Answer

A)  IgD. 
B)  IgE. 
C)  IgA. 
D)  IgM. 
E)  None of the answers is correct. 
A)  IgD. 
B)  IgE. 
C)  IgA. 
D)  IgM. 
E)  None of the answers is correct.

Question 2

Figure 17.2
  
-In Figure 17.2, which areas represent antigen- binding sites?

Accepted Answer

A)  a and b 
B)  a and c 
C)  b and c 
D)  c and d 
E)  b and d 
A)  a and b 
B)  a and c 
C)  b and c 
D)  c and d 
E)  b and d

Question 3

Which of the following WBCs are NOT lymphocytes?

Accepted Answer

A)  helper T cells 
B)  M cells 
C)  cytotoxic T cells 
D)  NK cells 
E)  B cells 
A)  helper T cells 
B)  M cells 
C)  cytotoxic T cells 
D)  NK cells 
E)  B cells

Question 4

The specificity of an antibody is due to

Accepted Answer

A)  its valence. 
B)  the H chains. 
C)  the L chains. 
D)  the constant portions of the H and L chains. 
E)  the variable portions of the H and L chains. 
A)  its valence. 
B)  the H chains. 
C)  the L chains. 
D)  the constant portions of the H and L chains. 
E)  the variable portions of the H and L chains.

Question 5

IL- 2, produced by TH cells,

Accepted Answer

A)  activates TC cells to CTLs. 
B)  activates macrophages. 
C)  causes phagocytosis. 
D)  stimulates TH cell maturation. 
E)  activates antigen- presenting cells. 
A)  activates TC cells to CTLs. 
B)  activates macrophages. 
C)  causes phagocytosis. 
D)  stimulates TH cell maturation. 
E)  activates antigen- presenting cells.

Question 6

Figure 17.1
  
-In Figure 17.1, which letter on the graph indicates the patient's secondary response to an antigen?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
E)  e 
A)  a 
B)  b 
C)  c 
D)  d 
E)  e

Question 7

Which of the following is NOT a characteristic of B cells?

Accepted Answer

A)  They are responsible for antibody formation. 
B)  They have antibodies on their surfaces. 
C)  They originate in bone marrow. 
D)  They recognize antigens associated with MHC I. 
E)  They are responsible for the memory response. 
A)  They are responsible for antibody formation. 
B)  They have antibodies on their surfaces. 
C)  They originate in bone marrow. 
D)  They recognize antigens associated with MHC I. 
E)  They are responsible for the memory response.

Question 8

Thymic selection

Accepted Answer

A)  destroys T cells that do not recognize self- molecules of MHC. 
B)  activates B cells. 
C)  destroys CD4+ cells that attack self. 
D)  destroys MHC molecules. 
E)  destroys B cells that make antibodies against self. 
A)  destroys T cells that do not recognize self- molecules of MHC. 
B)  activates B cells. 
C)  destroys CD4+ cells that attack self. 
D)  destroys MHC molecules. 
E)  destroys B cells that make antibodies against self.

Question 9

Which of the following statements about natural killer cells is FALSE?

Accepted Answer

A)  They destroy virus- infected cells. 
B)  They are stimulated by an antigen. 
C)  They destroy cells lacking MHC I. 
D)  They destroy tumor cells. 
E)  None of the answers are correct; all of these statements are true. 
A)  They destroy virus- infected cells. 
B)  They are stimulated by an antigen. 
C)  They destroy cells lacking MHC I. 
D)  They destroy tumor cells. 
E)  None of the answers are correct; all of these statements are true.

Question 10

Which of the following is the best definition of epitope?

Accepted Answer

A)  specific regions on antigens that interact with antibodies 
B)  specific regions on antigens that interact with T- cell receptors 
C)  specific regions on antigens that interact with MHC class molecules 
D)  specific regions on antigens that interact with haptens 
E)  specific regions on antigens that interact with perforins 
A)  specific regions on antigens that interact with antibodies 
B)  specific regions on antigens that interact with T- cell receptors 
C)  specific regions on antigens that interact with MHC class molecules 
D)  specific regions on antigens that interact with haptens 
E)  specific regions on antigens that interact with perforins

Question 11

The presence of which of the following indicates a current infection rather than a previous infection or vaccination?

Accepted Answer

A)  IgM 
B)  IgE 
C)  IgD 
D)  IgG 
E)  IgA 
A)  IgM 
B)  IgE 
C)  IgD 
D)  IgG 
E)  IgA

Question 12

Which of the following cells is NOT an APC?

Accepted Answer

A)  natural killer cells 
B)  dentritic cells 
C)  macrophages 
D)  immature B cells 
E)  None of the answers is correct; all of these are APCs. 
A)  natural killer cells 
B)  dentritic cells 
C)  macrophages 
D)  immature B cells 
E)  None of the answers is correct; all of these are APCs.

Question 13

Which one of the following causes transmembrane channels in target cells?

Accepted Answer

A)  hapten 
B)  granzymes 
C)  IL- 1 
D)  perforin 
E)  IL- 2 
A)  hapten 
B)  granzymes 
C)  IL- 1 
D)  perforin 
E)  IL- 2

Question 14

Which of the following recognizes antigens displayed on host cells with MHC II?

Accepted Answer

A)  natural killer cell 
B)  basophil 
C)  TC cell 
D)  TH cell 
E)  B cell 
A)  natural killer cell 
B)  basophil 
C)  TC cell 
D)  TH cell 
E)  B cell

Question 15

Only dendritic cells produce interleukins.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements about IL- 12 is FALSE?

Accepted Answer

A)  It activates macrophages. 
B)  It inhibits some tumor cells. 
C)  It causes TH cells to respond to HIV. 
D)  It causes autoimmune diseases. 
E)  It activates the TH1 pathway. 
A)  It activates macrophages. 
B)  It inhibits some tumor cells. 
C)  It causes TH cells to respond to HIV. 
D)  It causes autoimmune diseases. 
E)  It activates the TH1 pathway.

Question 17

Figure 17.1
  
-In Figure 17.1, which letter on the graph indicates the highest antibody titer during the patient's response to a second antigen?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
E)  e 
A)  a 
B)  b 
C)  c 
D)  d 
E)  e

Exam 17: Adaptive Immunity: Specific Defenses of the Host

In addition to IgG, the antibodies that can fix complement are

Figure 17.2 -In Figure 17.2, which areas represent antigen- binding sites?

Which of the following WBCs are NOT lymphocytes?

The specificity of an antibody is due to

IL- 2, produced by TH cells,

Figure 17.1 -In Figure 17.1, which letter on the graph indicates the patient's secondary response to an antigen?

Which of the following is NOT a characteristic of B cells?

Thymic selection

Which of the following statements about natural killer cells is FALSE?

Which of the following is the best definition of epitope?

The presence of which of the following indicates a current infection rather than a previous infection or vaccination?

Which of the following cells is NOT an APC?

Which one of the following causes transmembrane channels in target cells?

Which of the following recognizes antigens displayed on host cells with MHC II?

Only dendritic cells produce interleukins.

Which of the following statements about IL- 12 is FALSE?

Figure 17.1 -In Figure 17.1, which letter on the graph indicates the highest antibody titer during the patient's response to a second antigen?

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Recombinant Dna

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

Filters

IL- 2, produced by T_Hcells,