PATHOPHYSIOLOGY FINAL EXAM
PREPARATIONS AND SOLUTIONS
AUG 2025
Which of the following is not a function of antibodies?
A) Neutralizing bacterial toxins
B) Preventing viruses from entering tissue cells
C) Direct cell killing through the release of toxic chemicals
D) Opsonizing foreign antigen
c
Which is the main antibody transferred from a mother to an infant
in breast milk?
A) IgG
B) IgM
C) IgE
D) IgA
,d
When a person has an allergic reaction to bee stings, which
antibody causes the life-threatening hypersensitivity response?
A) IgM
B) IgA
C) IgE
D) IgG
c
Cytotoxic T (Tc) cells can destroy infected or cancer cells by
which of the following mechanisms?
A) Producing toxins
B) Stimulating apoptosis
C) Producing antibodies
D) Both A and B
d
,How do natural killer (NK) cells differ from cytotoxic T (Tc) cells?
A) NK cells lack antigen-specificity and can target any infected or
malignant cell.
B) NK cells are phagocytic.
C) NK cells can opsonize bacteria and viruses.
D) NK cells release toxins that kill the target cell.
a
A 20-year-old female has been diagnosed with AIDS. Laboratory
testing would reveal diminished levels of:
A) cytotoxic T cells.
B) B cells.
C) helper T cells.
D) T suppressor cells.
c
A 10-year-old male is diagnosed with a large tapeworm. Which of
the following cells would be produced in response to this worm?
A) Monocytes
B) Eosinophils
, C) Neutrophils
D) Natural killer cells
b
When a person has an allergic reaction to a bee sting, which type
of hypersensitivity response is occurring?
A) Type I
B) Type II
C) Type III
D) Type IV
a
Type I hypersensitivity is mediated by which of the following
antibodies?
A) IgG
B) IgD
C) IgM
D) IgE
d