Ap bio immune system practice questions Solved 100% Correct
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Course
AP Biology
Institution
AP Biology
Which of the following is the last line of defense against an extracellular pathogen?
A) lysozyme production
B) phagocytosis by neutrophils
C) antibody production by plasma cells D) histamine release by basophils
E) lysis by natural killer cells - C) antibody production by plasma cells
Which c...
Ap bio immune system practice questions Solved
100% Correct
Which of the following is the last line of defense against an extracellular pathogen?
A) lysozyme production
B) phagocytosis by neutrophils
C) antibody production by plasma cells D) histamine release by basophils
E) lysis by natural killer cells - ✔C) antibody production by plasma cells
Which cell type interacts with both the humoral and cell-mediated immune pathways?
A) plasma cells
B) cytotoxic T cells C) natural killer cells D) CD8 cells
E) helper T cells - ✔E) helper T cells
B cells interacting with helper T cells are stimulated to differentiate when A) B cells
produce IgE antibodies.
B) B cells release cytokines.
C) helper T cells present the class II MHC molecule-antigen complex on their surface. D)
helper T cells differentiate into cytotoxic T cells.
E) helper T cells release cytokines. - ✔E) helper T cells release cytokines.
When antibodies attack antigens, clumping of the affected cells generally occurs. This
is best explained by
A) the shape of the antibody with at least two binding regions. B) disulfide bridges
between the antigens.
, C) complement that makes the affected cells sticky. D) bonds between class I and class II
MHC molecules.
E) denaturation of the antibodies. - ✔A) the shape of the antibody with at least
two binding regions
What is the primary function of humoral immunity? A) It primarily defends against
fungi and protozoa.
B) It is responsible for transplant tissue rejection.
C) It protects the body against cells that become cancerous. D) It produces antibodies
that circulate in body fluids.
E) It primarily defends against bacteria and viruses that have already infected cells. -
✔D) It produces antibodies that circulate in body fluids.
Naturally acquired passive immunity would involve the A) injection of vaccine.
B) ingestion of interferon.
C) placental transfer of antibodies.
D) absorption of pathogens through mucous membranes.
E) injection of antibodies. - ✔C) placental transfer of antibodies.
Which of the following is true of active but not passive immunity? A) acquisition
and activation of antibodies.
B) proliferation of lymphocytes in bone marrow.
C) transfers antibodies from the mother across the placenta. D) requires direct
exposure to a living or simulated pathogen.
E) requires secretion of interleukins from macrophages. - ✔D) requires direct
exposure to a living or simulated pathogen.
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