HSS 1100 PRACTICE EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS
The student who caught the cold caused by this specific Rhinovirus was exposed to the
exact same Rhinovirus 18 months later. What component of the immune system will
protect her from getting the same cold again?
a) Dendritic cells
b) Antibodies that are "left over" from the last infection
c) Memory B cells
d) Plasma cells - Answer- c) Memory B cells
Which pair of molecules do NOT directly interact with one another?
a) BCR and TCR
b) BCR and epitope
c) CD8 and MHC-I
d) CD4 and MHC-II - Answer- a) BCR and TCR
Which of the following is NOT a step that ultimately leads to antibody production?
a) Differentiation of plasma cells
b) Activation of cytotoxic T cells by helper T cells
c) Activation of helper T cells by dendritic cells
d) Naive B cells conducting surveillance for foreign epitopes - Answer- b) Activation of
cytotoxic T cells by helper T cells
A person who has AIDS contracts rare and often life-threatening infections because
their helper T cell count is so low. Which of the following components of the immune
response still respond to antigen despite the low helper T cell count?
a) Apoptosis of infected host cells
b) Clonal expansion and antibody production
c) Activation of cytotoxic T cells
d) Clonal selection of B cells - Answer- d) Clonal selection of B cells
,Which of the following statements is true?
a) Memory B cells are typically established when the B cell binds to an antigen.
b) Adaptive defenses include humoral immunity only.
c) Adaptive defenses include both humoral and cellular immunity.
d) Innate defenses are enough to keep a person healthy. - Answer- c) Adaptive
defenses include both humoral and cellular immunity.
Monoclonal antibodies are used for the diagnosis of all of the following EXCEPT
________.
a) hepatitis
b) rabies
c) elevated blood glucose
d) pregnancy - Answer- c) elevated blood glucose
Virus-infected cells secrete interferons to "warn" other cells of the presence of virus and
these other cells to inhibit viral replication.
True OR False - Answer- True
Which mechanism(s) of antibody action triggers the response of a plasma protein that
will result in a membrane attack complex?
a) complement activation
b) neutralization
c) precipitation
d) agglutination - Answer- a) complement activation
Which of the following events is not directly associated with inflammatory responses?
a) antibody production
b) increased vascular permeability
c) vasodilation
d) phagocyte mobilization - Answer- a) antibody production
A class I MHC protein presents an antigen. What type of cell is likely presenting and to
what type of cell would it be presented?
a) Any nucleated cell would present antigens to a CD8 cell.
b) An antigen-presenting cell (APC) would present antigens to a CD8 cell.
c) An antigen-presenting cell (APC) would be presented to a CD4 cell.
d) Any nucleated cell would present antigens to a CD4 cell. - Answer- a) Any nucleated
cell would present antigens to a CD8 cell.
, Function of IgA?
a) Involved in allergies
b) Protects mucosal barriers
c) Main antibody of both primary and secondary immune response
d) First to peak during a primary immune response
e) Along with IgM, this is a B cell receptor. - Answer- b) Protects mucosal barriers
Function of IgD?
Which of the following is characteristic of complete antigens?
a) small molecules
b) contain many repeating chemical units
c) reactivity with an antibody
d) inhibit production of antibodies - Answer- c) reactivity with an antibody
Which of the following inflammatory chemicals is/are released by mast cells?
a) histamine
b) prostaglandins
c) kinins
d) complement - Answer- a) histamine
Binding of an eosinophil to an antibody-coated parasitic worm involves binding of the
antibody's stem region to a(n) ______.
a) antigen-binding site on the eosinophil plasma membrane
b) plasma membrane protein on the eosinophil's surface
c) plasma membrane protein on the worm's surface
d) antigen-binding site on a worm cell's plasma membrane - Answer- b) plasma
membrane protein on the eosinophil's surface
Immunocompetence ________.
a) occurs in one specific organ of the adaptive immune system
b) prevents intercellular communication so that only specific cell types respond to the
invader
c) requires exposure to an antigen
d) is the ability of individual cells to recognize a specific antigen by binding to it -
Answer- d) is the ability of individual cells to recognize a specific antigen by binding to it
Which mechanism(s) of antibody action result(s) in cell lysis?
a) agglutination
b) neutralization
QUESTIONS WITH 100% CORRECT
ANSWERS
The student who caught the cold caused by this specific Rhinovirus was exposed to the
exact same Rhinovirus 18 months later. What component of the immune system will
protect her from getting the same cold again?
a) Dendritic cells
b) Antibodies that are "left over" from the last infection
c) Memory B cells
d) Plasma cells - Answer- c) Memory B cells
Which pair of molecules do NOT directly interact with one another?
a) BCR and TCR
b) BCR and epitope
c) CD8 and MHC-I
d) CD4 and MHC-II - Answer- a) BCR and TCR
Which of the following is NOT a step that ultimately leads to antibody production?
a) Differentiation of plasma cells
b) Activation of cytotoxic T cells by helper T cells
c) Activation of helper T cells by dendritic cells
d) Naive B cells conducting surveillance for foreign epitopes - Answer- b) Activation of
cytotoxic T cells by helper T cells
A person who has AIDS contracts rare and often life-threatening infections because
their helper T cell count is so low. Which of the following components of the immune
response still respond to antigen despite the low helper T cell count?
a) Apoptosis of infected host cells
b) Clonal expansion and antibody production
c) Activation of cytotoxic T cells
d) Clonal selection of B cells - Answer- d) Clonal selection of B cells
,Which of the following statements is true?
a) Memory B cells are typically established when the B cell binds to an antigen.
b) Adaptive defenses include humoral immunity only.
c) Adaptive defenses include both humoral and cellular immunity.
d) Innate defenses are enough to keep a person healthy. - Answer- c) Adaptive
defenses include both humoral and cellular immunity.
Monoclonal antibodies are used for the diagnosis of all of the following EXCEPT
________.
a) hepatitis
b) rabies
c) elevated blood glucose
d) pregnancy - Answer- c) elevated blood glucose
Virus-infected cells secrete interferons to "warn" other cells of the presence of virus and
these other cells to inhibit viral replication.
True OR False - Answer- True
Which mechanism(s) of antibody action triggers the response of a plasma protein that
will result in a membrane attack complex?
a) complement activation
b) neutralization
c) precipitation
d) agglutination - Answer- a) complement activation
Which of the following events is not directly associated with inflammatory responses?
a) antibody production
b) increased vascular permeability
c) vasodilation
d) phagocyte mobilization - Answer- a) antibody production
A class I MHC protein presents an antigen. What type of cell is likely presenting and to
what type of cell would it be presented?
a) Any nucleated cell would present antigens to a CD8 cell.
b) An antigen-presenting cell (APC) would present antigens to a CD8 cell.
c) An antigen-presenting cell (APC) would be presented to a CD4 cell.
d) Any nucleated cell would present antigens to a CD4 cell. - Answer- a) Any nucleated
cell would present antigens to a CD8 cell.
, Function of IgA?
a) Involved in allergies
b) Protects mucosal barriers
c) Main antibody of both primary and secondary immune response
d) First to peak during a primary immune response
e) Along with IgM, this is a B cell receptor. - Answer- b) Protects mucosal barriers
Function of IgD?
Which of the following is characteristic of complete antigens?
a) small molecules
b) contain many repeating chemical units
c) reactivity with an antibody
d) inhibit production of antibodies - Answer- c) reactivity with an antibody
Which of the following inflammatory chemicals is/are released by mast cells?
a) histamine
b) prostaglandins
c) kinins
d) complement - Answer- a) histamine
Binding of an eosinophil to an antibody-coated parasitic worm involves binding of the
antibody's stem region to a(n) ______.
a) antigen-binding site on the eosinophil plasma membrane
b) plasma membrane protein on the eosinophil's surface
c) plasma membrane protein on the worm's surface
d) antigen-binding site on a worm cell's plasma membrane - Answer- b) plasma
membrane protein on the eosinophil's surface
Immunocompetence ________.
a) occurs in one specific organ of the adaptive immune system
b) prevents intercellular communication so that only specific cell types respond to the
invader
c) requires exposure to an antigen
d) is the ability of individual cells to recognize a specific antigen by binding to it -
Answer- d) is the ability of individual cells to recognize a specific antigen by binding to it
Which mechanism(s) of antibody action result(s) in cell lysis?
a) agglutination
b) neutralization
