Question 1

Which of the following is not a target for TC cells?

Accepted Answer

A)   Pig transplanted heart
B)   Bacteria
C)   Cancer cells
D)   Human transplanted liver
E)   Virus-infected cellsF) B) and E)
G) D) and E)

Question 2

Lymphocytes _______.

Accepted Answer

A)   possess MHC antigens for recognizing self
B)   have membrane receptors that recognize foreign antigens
C)   gain tolerance to self by destruction of lymphocytes that could react against self
D)   develop into clones of B and T cells with extreme variations of speciﬁcity
E)   All of these choices are correct.F) C) and D)
G) A) and C)

Question 3

Which is incorrect about the Fc region of an immunoglobulin?

Accepted Answer

A)   It is called the crystallizable fragment.
B)   It contains an effector molecule that can ﬁx complement.
C)   It forms the antigen binding sites.
D)   It contains an effector molecule that can bind to cells such as macrophages and mast cells.
E)   It determines the class to which the immunoglobulin belongs.F) A) and C)
G) A) and E)

Question 4

One plasma cell will secrete antibodies of various classes, but the antibodies will all have the same speci?city.

Accepted Answer

A) True 
 B)False

Question 5

Helper T cells _______.

Accepted Answer

A)   secrete antibodies
B)   suppress immune reactions
C)   function in allergic reactions
D)   directly destroy target cells
E)   activate B cells and other T cellsF) A) and B)
G) B) and C)

Question 6

The immunoglobulin/s found on the surface of B cells is/are _______.

Accepted Answer

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

Question 7

Acellular vaccines and subunit vaccines _______.

Accepted Answer

A)   contain modiﬁed bacterial exotoxin molecules
B)   contain select antigenic components of a pathogen rather than whole cells or viruses
C)   utilize DNA strands that will produce the antigen
D)   confer passive immunity
E)   are always genetically engineeredF) C) and E)
G) A) and D)

Question 8

Acquired speciﬁc immunity involves the response of _______.

Accepted Answer

A)   skin barriers
B)   B and T lymphocytes
C)   lysozyme
D)   interferon
E)   mucus membranesF) A) and E)
G) A) and C)

Question 9

Which of the following is a special binding substance that enhances immunogenicity and prolongs antigen retention at the injection site?

Accepted Answer

A)   Adjuvant
B)   Gamma globulin
C)   Booster
D)   "Trojan horse" recombinant vaccine
E)   Antibodies to toxinF) C) and D)
G) C) and E)

Question 10

T cell response to T-dependent antigens requires _______.

Accepted Answer

A)   typically a protein antigen
B)   binding of the T cell to a class II MHC receptor on a macrophage
C)   binding of the T cell to a site on the antigen
D)   interleukin-1 activating the T helper cell
E)   All of these choices are correct.F) None of the above
G) All of the above

Question 11

What type of cells secrete antibodies?

Accepted Answer

A)   Plasma cells
B)   Antigen-presenting cells
C)   Helper T cells
D)   Memory B cells
E)   Cytotoxic T cellsF) B) and E)
G) A) and C)

Question 12

Superantigens are _______.

Accepted Answer

A)   body tissues that the immune system mistakes as foreign
B)   cell markers found in some member of a species but not in other members
C)   bacterial toxins that activate T cells at a 100 times greater rate than other antigens
D)   antigens that evoke allergic reactionsE) B) and D)
F) B) and C)

Question 13

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

Accepted Answer

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

Question 14

Gamma globulin can be given as immunotherapy to confer artiﬁcial passive immunity.

Accepted Answer

A) True 
 B)False

Question 15

The immunoglobulin class that has an Fc region that binds to receptors on basophils and mast cells is ______.

Accepted Answer

A)   IgG
B)   IgM
C)   IgA
D)   IgD
E)   IgEF) A) and B)
G) A) and C)

Question 16

An example of natural passive immunity would be _______.

Accepted Answer

A)   a fetus acquiring maternal IgG to the chickenpox virus across the placenta
B)   giving a person immune serum globulins to chickenpox virus after exposure to the disease
C)   chickenpox vaccine triggering extended immunity to chickenpox
D)   chickenpox infection, followed by lifelong immunityE) C) and D)
F) A) and B)

Question 17

An example of artiﬁcial passive immunity would be _______.

Accepted Answer

A)   chickenpox infection, followed by lifelong immunity
B)   chickenpox vaccine triggering extended immunity to chickenpox
C)   giving a person immune serum globulins to chickenpox virus after exposure to the disease
D)   a fetus acquiring maternal IgG to the chickenpox virus across the placentaE) A) and B)
F) A) and C)

Question 18

Cytotoxic T cells _______.

Accepted Answer

A)   secrete interleukin-2 to stimulate B and T cells
B)   are activated by free, soluble antigens
C)   lack speciﬁcity for antigen
D)   secrete granzymes and perforins that damage target cellsE) B) and C)
F) C) and D)

Question 19

B and T lymphocytes are speciﬁc; they have only a single type of cell marker on their surface.

Accepted Answer

A) True 
 B)False

Question 20

Killed or inactivated vaccines are prepared by _______.

Accepted Answer

A)   passage of the pathogen through unnatural hosts or tissue culture
B)   removal of virulence genes from the microbe
C)   treatment with formalin, heat, or radiation
D)   long-term subculturing of the microbeE) A) and B)
F) A) and C)

Exam 15: Host Defenses Ii: Specific Immunity and Immunization

The immunoglobulin class that has an Fc region that binds to receptors on basophils and mast cells is ______.

Correct AnswerverifiedShow Answer

Superantigens are _______.

Correct AnswerverifiedShow Answer

An example of artiﬁcial passive immunity would be _______.

Correct AnswerverifiedShow Answer

An example of natural passive immunity would be _______.

Correct AnswerverifiedShow Answer

Lymphocytes _______.

Correct AnswerverifiedShow Answer

Gamma globulin can be given as immunotherapy to confer artiﬁcial passive immunity.

Correct AnswerverifiedShow Answer

Killed or inactivated vaccines are prepared by _______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What type of cells secrete antibodies?

Correct AnswerverifiedShow Answer

One plasma cell will secrete antibodies of various classes, but the antibodies will all have the same speci?city.

Correct AnswerverifiedShow Answer

Which of the following is not a target for TC cells?

Correct AnswerverifiedShow Answer

Acquired speciﬁc immunity involves the response of _______.

Correct AnswerverifiedShow Answer

Helper T cells _______.

Correct AnswerverifiedShow Answer

B and T lymphocytes are speciﬁc; they have only a single type of cell marker on their surface.

Correct AnswerverifiedShow Answer

Acellular vaccines and subunit vaccines _______.

Correct AnswerverifiedShow Answer

The immunoglobulin/s found on the surface of B cells is/are _______.

Correct AnswerverifiedShow Answer

Which of the following is a special binding substance that enhances immunogenicity and prolongs antigen retention at the injection site?

Correct AnswerverifiedShow Answer

T cell response to T-dependent antigens requires _______.

Correct AnswerverifiedShow Answer

Which is incorrect about the Fc region of an immunoglobulin?

Correct AnswerverifiedShow Answer

Cytotoxic T cells _______.

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