Question 1

Secretory IgA and the IgA in the blood have the same chemical composition.

Accepted Answer

A) True 
 B)False

Question 2

IgA antibodies are best described as

Accepted Answer

A)  those involved in complement activation. 
B)  a cause of basophil and eosinophil degranulation. 
C)  the antibody found in body secretions. 
D)  the trigger for antibody-dependent cellular toxicity (ADC
C) . 
E)  the most common type of antibody in the blood during the initial phases of an immune response. 
A)  those involved in complement activation. 
B)  a cause of basophil and eosinophil degranulation. 
C)  the antibody found in body secretions. 
D)  the trigger for antibody-dependent cellular toxicity (ADC
C) . 
E)  the most common type of antibody in the blood during the initial phases of an immune response.

Question 3

When a T cell's CD95L binds to the CD95 on a target cell, antibodies are formed.

Accepted Answer

A) True 
 B)False

Question 4

The surface of each B lymphocyte is covered with about 250,000 to 500,000 identical copies of __________.

Accepted Answer

The answer of The surface of each B lymphocyte is...

Question 5

Which of the following is the function of growth factors?

Accepted Answer

A)  cause basophils and eosinophils to degranulate 
B)  activate complement 
C)  stimulate phagocytes 
D)  chemotaxis of leukocytes 
E)  ensure production of enough leukocytes 
A)  cause basophils and eosinophils to degranulate 
B)  activate complement 
C)  stimulate phagocytes 
D)  chemotaxis of leukocytes 
E)  ensure production of enough leukocytes

Question 6

Large accumulations of young self-tolerant lymphocytes conducting surveillance for specific antigenic determinants are found in

Accepted Answer

A)  the MALT. 
B)  lymph nodes. 
C)  the thymus. 
D)  the MALT and lymph nodes. 
E)  the MALT, lymph nodes, and thymus. 
A)  the MALT. 
B)  lymph nodes. 
C)  the thymus. 
D)  the MALT and lymph nodes. 
E)  the MALT, lymph nodes, and thymus.

Question 7

A __________ immune response occurs when an APC binds to a Th2 lymphocyte and releases IL-1.

Accepted Answer

The answer of A __________ immune response occurs when an...

Question 8

The MALT lacks the tough outer capsule of a lymph node but functions in the same way.

Accepted Answer

A) True 
 B)False

Question 9

The most prevalent type of antibody in the blood is

Accepted Answer

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

Question 10

When a T cell and an antigen-presenting cell interact, a specialized contact called a(n) __________ synapse forms between them.

Accepted Answer

The answer of When a T cell and an antigen-presenting...

Question 11

Molecules with a molecular mass less than 5000 daltons can become antigens when they bind to carrier molecules.

Accepted Answer

A) True 
 B)False

Question 12

The perforin-granzyme pathway involves

Accepted Answer

A)  the production of fever, which kills the pathogen. 
B)  the production of antibodies toward the invading pathogen. 
C)  the synthesis of special cell-killing proteins that act on infected or abnormal cells. 
D)  presenting the foreign antigen to B cells. 
E)  binding CD95L to infected cells, which eventually leads to cell apoptosis. 
A)  the production of fever, which kills the pathogen. 
B)  the production of antibodies toward the invading pathogen. 
C)  the synthesis of special cell-killing proteins that act on infected or abnormal cells. 
D)  presenting the foreign antigen to B cells. 
E)  binding CD95L to infected cells, which eventually leads to cell apoptosis.

Question 13

B lymphocytes can bind directly to large antigents with repeating polysaccharide subunits, such as a bacterial capsule that has antigenic determinants known as T-independent __________.

Accepted Answer

The answer of B lymphocytes can bind directly to large...

Question 14

Under normal situations, the lymphocytes do not develop an immune response against autoantigens because

Accepted Answer

A)  antibodies produced against autoantigens are destroyed. 
B)  they never have binding sites that are complimentary to autoantigens. 
C)  they identify cells with autoantigens as belonging to the body and do not attack them. 
D)  antibodies prevent them from binding to the body's own cells. 
E)  lymphocytes that bind to autoantigens undergo apoptosis. 
A)  antibodies produced against autoantigens are destroyed. 
B)  they never have binding sites that are complimentary to autoantigens. 
C)  they identify cells with autoantigens as belonging to the body and do not attack them. 
D)  antibodies prevent them from binding to the body's own cells. 
E)  lymphocytes that bind to autoantigens undergo apoptosis.

Question 15

Adaptive immunity is sometimes also called acquired immunity. Which of the following statements provides a basis for the alternative name?

Accepted Answer

A)  Lymphocytes of the adaptive immune system are highly specific for a single antigenic determinant. 
B)  Activated lymphocytes produce daughter cells that are identical in specificity and function. 
C)  To become activated, lymphocytes require exposure to the antigenic determinant for which they are specific. 
D)  Activated lymphocytes may persist for years in the body. 
E)  Lymphocytes reactive to normal body components are removed. 
A)  Lymphocytes of the adaptive immune system are highly specific for a single antigenic determinant. 
B)  Activated lymphocytes produce daughter cells that are identical in specificity and function. 
C)  To become activated, lymphocytes require exposure to the antigenic determinant for which they are specific. 
D)  Activated lymphocytes may persist for years in the body. 
E)  Lymphocytes reactive to normal body components are removed.

Question 16

Discuss the basic structure of the antibody molecule.

Accepted Answer

The antibody molecule is composed of fou

Question 17

Which of the following statements regarding the cell-mediated immune response is true?

Accepted Answer

A)  Cytotoxic T lymphocytes do not require antigen presentation to become activated. 
B)  Cytotoxic T lymphocytes interact with antibodies that have bound antigen to identify their target. 
C)  Helper T lymphocytes have no role in the activation of cytotoxic T lymphocytes. 
D)  Cytotoxic T lymphocytes kill by producing hydrogen peroxide. 
E)  A single cytotoxic T lymphocyte can kill many target cells. 
A)  Cytotoxic T lymphocytes do not require antigen presentation to become activated. 
B)  Cytotoxic T lymphocytes interact with antibodies that have bound antigen to identify their target. 
C)  Helper T lymphocytes have no role in the activation of cytotoxic T lymphocytes. 
D)  Cytotoxic T lymphocytes kill by producing hydrogen peroxide. 
E)  A single cytotoxic T lymphocyte can kill many target cells.

Question 18

Antigen processing is required for helper T cells to bind __________.

Accepted Answer

The answer of Antigen processing is required for helper T...

Question 19

Which of the following is NOT included in the MALT?

Accepted Answer

A)  the appendix 
B)  the spleen 
C)  Peyer's patches 
D)  lymphoid tissue in the respiratory tract 
E)  lymphoid tissue in the small intestine 
A)  the appendix 
B)  the spleen 
C)  Peyer's patches 
D)  lymphoid tissue in the respiratory tract 
E)  lymphoid tissue in the small intestine

Question 20

The variable regions from the light and heavy chains of a(n) __________ combine to form antigen-binding sites.

Accepted Answer

The answer of The variable regions from the light and...

Exam 16: Adaptive Immunity

Secretory IgA and the IgA in the blood have the same chemical composition.

IgA antibodies are best described as

When a T cell's CD95L binds to the CD95 on a target cell, antibodies are formed.

The surface of each B lymphocyte is covered with about 250,000 to 500,000 identical copies of __________.

Which of the following is the function of growth factors?

Large accumulations of young self-tolerant lymphocytes conducting surveillance for specific antigenic determinants are found in

A __________ immune response occurs when an APC binds to a Th2 lymphocyte and releases IL-1.

The MALT lacks the tough outer capsule of a lymph node but functions in the same way.

The most prevalent type of antibody in the blood is

When a T cell and an antigen-presenting cell interact, a specialized contact called a(n) __________ synapse forms between them.

Molecules with a molecular mass less than 5000 daltons can become antigens when they bind to carrier molecules.

The perforin-granzyme pathway involves

B lymphocytes can bind directly to large antigents with repeating polysaccharide subunits, such as a bacterial capsule that has antigenic determinants known as T-independent __________.

Under normal situations, the lymphocytes do not develop an immune response against autoantigens because

Adaptive immunity is sometimes also called acquired immunity. Which of the following statements provides a basis for the alternative name?

Discuss the basic structure of the antibody molecule.

Which of the following statements regarding the cell-mediated immune response is true?

Antigen processing is required for helper T cells to bind __________.

Which of the following is NOT included in the MALT?

The variable regions from the light and heavy chains of a(n) __________ combine to form antigen-binding sites.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Immunization and Immune Testing

Aids and Other Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Applied and Environmental Microbiology

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