Question 1

Humans have approximately how many chemokines?

Accepted Answer

A)   10
B)   20
C)   40
D)   80E) A) and D)
F) C) and D)

Question 2

Class switch recombination does which of the following?

Accepted Answer

A)   creates a change at a single nucleotide
B)   copies nucleotide sequences from a pseudogene V into the V(J) D
C)   swaps exons of the constant region between highly repetitive regions
D)   all of theseE) A) and D)
F) C) and D)

Question 3

HIV binds strongly to which of the following?

Accepted Answer

A)   CD3
B)   CD4
C)   CD 8
D)   all of theseE) None of the above
F) A) and B)

Question 4

The immunoglobulin superfamily does not include which of the following?

Accepted Answer

A)   B cells
B)   the receptors of T cells
C)   MHC
D)   None of them, they are all members of the immunoglobulin superfamily.E) All of the above
F) None of the above

Question 5

How do glucocorticoids regulate the synthesis of cytokines?

Accepted Answer

A)   by direct interaction with their genes
B)   by interaction with transcription factors
C)   by both a and b
D)   by neither a nor bE) C) and D)
F) A) and D)

Question 6

Perforins are associated with which of the following?

Accepted Answer

A)   B cells
B)   macrophages
C)   NK cells
D)   Th cellsE) A) and B)
F) All of the above

Question 7

Cytokines perform which of the following functions?

Accepted Answer

A)   bringing leukocytes to injured tissue
B)   helping leukocytes migrate out of the blood vessels
C)   activate leukocytes
D)   all of the aboveE) All of the above
F) C) and D)

Question 8

Which of the following is true of stem cells?

Accepted Answer

A)   They can only become B cells.
B)   They can only become T cells.
C)   They can become either B cells or T cells.
D)   They are not involved in the production of lymphocytes.E) B) and C)
F) A) and C)

Question 9

Approximately what percentage of patients who contract rheumatic fever develop heart valve damage?

Accepted Answer

A)   3%
B)   10%
C)   40%
D)   60%E) B) and D)
F) A) and D)

Question 10

Which of the following types of cells is responsible for long term immunity?

Accepted Answer

A)   macrophages
B)   dendritic cells
C)   B cells
D)   T cellsE) A) and D)
F) B) and C)

Question 11

Which of the following diseases have been eliminated by the use of vaccines?

Accepted Answer

A)   HIV
B)   heptatitis C
C)   tuberculosis
D)   malaria
E)   None of these have been eliminated, all of these are still active areas of research.F) None of the above
G) C) and E)

Question 12

Approximately what percentage of patients who are not treated for strep throat might be expected to develop heart valve damage?

Accepted Answer

A)   1.2%
B)   3%
C)   40%
D)   43%E) None of the above
F) All of the above

Question 13

Which of the following is true for T cells?

Accepted Answer

A)   T cells interact directly with antigens.
B)   T cells are nonspecific, they recognize all antigens.
C)   Each T cell is specific for a single antigen.
D)   Each T cell can recognize a wide variety of antigens.E) A) and B)
F) A) and C)

Question 14

Which of the following is not a lymphoid organ?

Accepted Answer

A)   spleen
B)   thymus
C)   tonsils
D)   None of these, they are all lymphoid organs.E) A) and B)
F) A) and C)

Question 15

Which of the following immunoglobulin classes has the smallest molecular weight?

Accepted Answer

A)   IgA
B)   IgD
C)   IgE
D)   IgME) None of the above
F) A) and B)

Question 16

Which of the following brings a portion of an antigen to the surface of an infected cell?

Accepted Answer

A)   antibodies
B)   B cells
C)   MHC molecules
D)   T cellsE) A) and B)
F) A) and C)

Question 17

Class II MHC molecules do which if the following?

Accepted Answer

A)   pick up dead antigens
B)   seek out antigen molecules that have been synthesized inside a virus infected cell
C)   both a and b
D)   neither a nor bE) A) and C)
F) B) and D)

Question 18

Which of the following is true of immunoglobulins?

Accepted Answer

A)   Only the heavy chains have both constant and variable regions.
B)   Only the light chains have both constant and variable regions.
C)   Both light and heavy chains have both constant and variable regions.
D)   There are no constant regions in any immunoglobulin chains.E) A) and D)
F) B) and D)

Question 19

Which of the following have adaptive immunity?

Accepted Answer

A)   all plants and animals
B)   only animals
C)   only vertebrates
D)   only mammalsE) None of the above
F) C) and D)

Question 20

Which of the following types of cells is responsible for the release of antibodies?

Accepted Answer

A)   macrophages
B)   dendritic cells
C)   B cells
D)   T cellsE) B) and D)
F) B) and C)

Exam 31: Immunochemistry

Which of the following types of cells is responsible for long term immunity?

Correct AnswerverifiedShow Answer

Cytokines perform which of the following functions?

Correct AnswerverifiedShow Answer

Which of the following diseases have been eliminated by the use of vaccines?

Correct AnswerverifiedShow Answer

Which of the following is true of stem cells?

Correct AnswerverifiedShow Answer

Humans have approximately how many chemokines?

Correct AnswerverifiedShow Answer

Which of the following immunoglobulin classes has the smallest molecular weight?

Correct AnswerverifiedShow Answer

Perforins are associated with which of the following?

Correct AnswerverifiedShow Answer

Which of the following is true of immunoglobulins?

Correct AnswerverifiedShow Answer

The immunoglobulin superfamily does not include which of the following?

Correct AnswerverifiedShow Answer

HIV binds strongly to which of the following?

Correct AnswerverifiedShow Answer

Approximately what percentage of patients who contract rheumatic fever develop heart valve damage?

Correct AnswerverifiedShow Answer

Which of the following is true for T cells?

Correct AnswerverifiedShow Answer

Approximately what percentage of patients who are not treated for strep throat might be expected to develop heart valve damage?

Correct AnswerverifiedShow Answer

Which of the following brings a portion of an antigen to the surface of an infected cell?

Correct AnswerverifiedShow Answer

Class II MHC molecules do which if the following?

Correct AnswerverifiedShow Answer

Class switch recombination does which of the following?

Correct AnswerverifiedShow Answer

Which of the following have adaptive immunity?

Correct AnswerverifiedShow Answer

Which of the following is not a lymphoid organ?

Correct AnswerverifiedShow Answer

How do glucocorticoids regulate the synthesis of cytokines?

Correct AnswerverifiedShow Answer

Which of the following types of cells is responsible for the release of antibodies?

Correct AnswerverifiedShow Answer

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