Question 1

Which sequence of events is correct for a specific immune response?

Accepted Answer

A)  Lymphocyte development, presentation of antigens, antibody production, challenge of B cells.
B)  Lymphocyte development, challenge of B cells, antibody production, presentation of antigens.
C)  Lymphocyte development, presentation of antigens, B cell challenge, antibody production.
D)  Antibody production, lymphocyte production, B cell challenge, presentation of antigens.E) A) and B)
F) None of the above

Question 2

Certain body sites contain sequestered molecules, called _____ that escaped assessment during development of immune tolerance and are mistaken as foreign.

Accepted Answer

The answer of Certain body sites contain sequestered molecules, called...

Question 3

Which type of cell is severely depressed in AIDS patients?

Accepted Answer

A)  Cytotoxic T cells
B)  Helper T cells
C)  B cells
D)  Plasma cells
E)  Suppressor T cellsF) A) and B)
G) A) and C)

Question 4

All of the following are advantages of attenuated vaccines over inactivated vaccines except

Accepted Answer

A)  they confer longer lasting protection.
B)  they produce infection but not disease.
C)  they can mutate back to a virulent strain.
D)  they require fewer boosters.
E)  they require smaller doses.F) C) and D)
G) All of the above

Question 5

Cell surface markers involved in immune reactions

Accepted Answer

A)  are the result of genetic expression.
B)  function in recognition of self molecules.
C)  receive and transmit chemical messages among other cells of the system.
D)  aid in cellular development.
E)  all of the choices are correct.F) None of the above
G) B) and C)

Question 6

Which immunoglobulin class/es can fix complement?

Accepted Answer

A)  IgM only
B)  IgG only
C)  IgD only
D)  IgM and IgG
E)  IgE and IgAF) A) and B)
G) C) and D)

Question 7

Antibody molecules can act as enzyme to directly destroy an antigen.

Accepted Answer

A) True 
 B)False

Question 8

Properties of effective antigens include all the following, except

Accepted Answer

A)  foreign to the immune system.
B)  molecular complexity.
C)  large molecules with a minimum molecular weight of 1,000.
D)  large polymers made up of repeating subunits.
E)  cells or large, complex molecules.F) A) and E)
G) B) and C)

Question 9

When antiserum is subjected to electrophoresis, the gamma globulin band contains mostly

Accepted Answer

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

Question 10

Which process involves antibodies covering surface receptors on a virus or toxin molecule thereby disrupting their activity?

Accepted Answer

A)  Neutralization
B)  Opsonization
C)  Complement fixation
D)  Agglutination
E)  Anamnestic responseF) A) and B)
G) A) and C)

Question 11

Antibody molecules circulate in lymph, blood, and tissue fluids.

Accepted Answer

A) True 
 B)False

Question 12

Which cells direct involvement are required for cell-mediated immunities?

Accepted Answer

A)  T-cells
B)  B-cells
C)  Bacterial cells
D)  Viral componentsE) All of the above
F) B) and D)

Question 13

A hybridoma results from the fusion of a myeloma cell with a normal _____ cell.

Accepted Answer

The answer of A hybridoma results from the fusion of...

Question 14

Immune sera is produced in horses for all the following except

Accepted Answer

A)  diphtheria.
B)  botulism.
C)  snake bites.
D)  chickenpox.
E)  spider bites.F) A) and C)
G) B) and C)

Question 15

All of the following are characteristics of IgM, except

Accepted Answer

A)  it has 10 antigen binding sites.
B)  it contains a central J chain.
C)  it is the first class synthesized by a plasma cell.
D)  it can fix complement.
E)  it is a dimer.F) D) and E)
G) B) and E)

Question 16

The monomer subunit of immunoglobulin molecules has all the following, except

Accepted Answer

A)  two identical heavy polypeptide chains.
B)  two identical light polypeptide chains.
C)  disulfide bonds between polypeptide chains.
D)  four antigen binding sites.
E)  a variable and constant region on each polypeptide chain.F) D) and E)
G) B) and C)

Question 17

During presentation of APC-bound antigen, macrophages secrete the cytokine, _____, that activates T helper cells.

Accepted Answer

The answer of During presentation of APC-bound antigen, macrophages secrete...

Question 18

Cytotoxic T cells

Accepted Answer

A)  stimulate B cell proliferation.
B)  lack specificity for a target cell.
C)  secrete granzymes and perforins that damage target cells.
D)  secrete interleukin-2 to stimulate B and T cells.
E)  All of the choices are correct.F) A) and D)
G) D) and E)

Question 19

The immunoglobulin class that is the only one capable of crossing the placenta is

Accepted Answer

A)  IgA.
B)  IgD.
C)  IgE.
D)  IgG.
E)  IgM.F) All of the above
G) A) and C)

Question 20

Which process involves antibodies coating microorganisms in order to facilitate phagocytosis?

Accepted Answer

A)  Neutralization
B)  Opsonization
C)  Complement fixation
D)  Agglutination
E)  Anamnestic responseF) A) and E)
G) None of the above

Exam 15: Adaptive, Specific Immunity and Immunization

The monomer subunit of immunoglobulin molecules has all the following, except

Correct AnswerverifiedShow Answer

The immunoglobulin class that is the only one capable of crossing the placenta is

Correct AnswerverifiedShow Answer

All of the following are advantages of attenuated vaccines over inactivated vaccines except

Correct AnswerverifiedShow Answer

Properties of effective antigens include all the following, except

Correct AnswerverifiedShow Answer

All of the following are characteristics of IgM, except

Correct AnswerverifiedShow Answer

Cell surface markers involved in immune reactions

Correct AnswerverifiedShow Answer

Antibody molecules circulate in lymph, blood, and tissue fluids.

Correct AnswerverifiedShow Answer

Which immunoglobulin class/es can fix complement?

Correct AnswerverifiedShow Answer

Cytotoxic T cells

Correct AnswerverifiedShow Answer

Certain body sites contain sequestered molecules, called _____ that escaped assessment during development of immune tolerance and are mistaken as foreign.

Correct AnswerverifiedShow Answer

Which type of cell is severely depressed in AIDS patients?

Correct AnswerverifiedShow Answer

Which cells direct involvement are required for cell-mediated immunities?

Correct AnswerverifiedShow Answer

Which sequence of events is correct for a specific immune response?

Correct AnswerverifiedShow Answer

A hybridoma results from the fusion of a myeloma cell with a normal _____ cell.

Correct AnswerverifiedShow Answer

Antibody molecules can act as enzyme to directly destroy an antigen.

Correct AnswerverifiedShow Answer

Which process involves antibodies coating microorganisms in order to facilitate phagocytosis?

Correct AnswerverifiedShow Answer

During presentation of APC-bound antigen, macrophages secrete the cytokine, _____, that activates T helper cells.

Correct AnswerverifiedShow Answer

Which process involves antibodies covering surface receptors on a virus or toxin molecule thereby disrupting their activity?

Correct AnswerverifiedShow Answer

When antiserum is subjected to electrophoresis, the gamma globulin band contains mostly

Correct AnswerverifiedShow Answer

Immune sera is produced in horses for all the following except

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified