Question 1

Which of the following is the best definition of antigen?

Accepted Answer

A)  a chemical that combines with antibodies 
B)  a pathogen 
C)  a protein that combines with antibodies 
D)  a chemical that elicits an antibody response and can combine with these antibodies 
E)  something foreign in the body 
A)  a chemical that combines with antibodies 
B)  a pathogen 
C)  a protein that combines with antibodies 
D)  a chemical that elicits an antibody response and can combine with these antibodies 
E)  something foreign in the body D

Question 2

Figure 17.1
  
-In Figure 17.1, which letter on the graph indicates the highest antibody titer during the patientʹs response to a second and distinct/different antigen?

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

The production of interferons at an infection site is critical for chemotaxis.

Accepted Answer

A) True 
 B)False

Question 5

At a minimum, the human immune system is capable of recognizing approximately how many different antigens?

Accepted Answer

A)  1025 
B)  1010 
C)  1015 
D)  105 
E)  1020 
A)  1025 
B)  1010 
C)  1015 
D)  105 
E)  1020

Question 6

Plasma cells are activated by a(n)

Accepted Answer

A)  antigen. 
B)  APC. 
C)  B cell. 
D)  T cell. 
E)  memory cell. 
A)  antigen. 
B)  APC. 
C)  B cell. 
D)  T cell. 
E)  memory cell.

Question 7

Figure 17.1
  
-In Figure 17.1, the arrow at time (c) indicates

Accepted Answer

A)  exposure to a new antigen. 
B)  the secondary response. 
C)  the primary response. 
D)  the T-cell response. 
E)  the time of exposure to the same antigen as at time (a). 
A)  exposure to a new antigen. 
B)  the secondary response. 
C)  the primary response. 
D)  the T-cell response. 
E)  the time of exposure to the same antigen as at time (a).

Question 8

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

Accepted Answer

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

Question 9

The following events elicit an antibody response. What is the third step?

Accepted Answer

A)  Antigen-digest goes to surface of APC. 
B)  B cell is activated. 
C)  TH cell recognizes antigen-digest and MHC II. 
D)  APC phagocytizes antigen. 
E)  TH cell produces cytokines. 
A)  Antigen-digest goes to surface of APC. 
B)  B cell is activated. 
C)  TH cell recognizes antigen-digest and MHC II. 
D)  APC phagocytizes antigen. 
E)  TH cell produces cytokines.

Question 10

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 11

Which of the following is the best definition of epitope?

Accepted Answer

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

Question 12

The antibodies found in mucus, saliva, and tears are

Accepted Answer

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

Question 13

Plasma cells will eventually differentiate into memory cells.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following WBCs are NOT lymphocytes?

Accepted Answer

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

Question 15

Figure 17.2
  
-In Figure 17.2, which areas are similar for all IgG antibodies?

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 16

Which of the following is NOT a characteristic of cellular immunity?

Accepted Answer

A)  Cells are processed in the thymus gland. 
B)  It can inhibit the immune response. 
C)  The cells originate in bone marrow. 
D)  B cells make antibodies. 
E)  T cells react with antigens. 
A)  Cells are processed in the thymus gland. 
B)  It can inhibit the immune response. 
C)  The cells originate in bone marrow. 
D)  B cells make antibodies. 
E)  T cells react with antigens.

Question 17

The following events occur in cellular immunity, leading to a response from TH cells. What is the third step?

Accepted Answer

A)  TH cells proliferate. 
B)  Dendritic cell takes up antigen. 
C)  TH cell produces cytokines. 
D)  Antigen enters M cell. 
E)  Antibodies are produced. 
A)  TH cells proliferate. 
B)  Dendritic cell takes up antigen. 
C)  TH cell produces cytokines. 
D)  Antigen enters M cell. 
E)  Antibodies are produced.

Question 18

Newbornsʹ immunity due to the transfer of antibodies across the placenta is an example of

Accepted Answer

A)  naturally acquired passive immunity. 
B)  innate immunity. 
C)  naturally acquired active immunity. 
D)  artificially acquired active immunity. 
E)  artificially acquired passive immunity. 
A)  naturally acquired passive immunity. 
B)  innate immunity. 
C)  naturally acquired active immunity. 
D)  artificially acquired active immunity. 
E)  artificially acquired passive immunity.

Question 19

Figure 17.2
  
-In Figure 17.2, what portion will typically attach to a host cell?

Accepted Answer

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

Question 20

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

Accepted Answer

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

Exam 17: Adaptive Immunity: Specific Defenses of the Host

Which of the following is the best definition of antigen?

Figure 17.1 -In Figure 17.1, which letter on the graph indicates the highest antibody titer during the patientʹs response to a second and distinct/different antigen?

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

The production of interferons at an infection site is critical for chemotaxis.

At a minimum, the human immune system is capable of recognizing approximately how many different antigens?

Plasma cells are activated by a(n)

Figure 17.1 -In Figure 17.1, the arrow at time (c) indicates

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

The following events elicit an antibody response. What is the third step?

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

Which of the following is the best definition of epitope?

The antibodies found in mucus, saliva, and tears are

Plasma cells will eventually differentiate into memory cells.

Which of the following WBCs are NOT lymphocytes?

Figure 17.2 -In Figure 17.2, which areas are similar for all IgG antibodies?

Which of the following is NOT a characteristic of cellular immunity?

The following events occur in cellular immunity, leading to a response from TH cells. What is the third step?

Newbornsʹ immunity due to the transfer of antibodies across the placenta is an example of

Figure 17.2 -In Figure 17.2, what portion will typically attach to a host cell?

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

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 Dna Technology

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

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 Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

Innate Immunity: Nonspecific Defenses of the Host

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