BIOS 242 WEEK 3 QUIZ MCQS TEST PAPER
2026 QUESTIONS WITH SOLUTIONS GRADED
A+
◉ Which of the following are molecular mediators of inflammation?
A) immunoglobulins
B) lipopolysaccharide
C) erythrocytes
D) both chemokines and cytokines Answer: D) both chemokines and
cytokines
◉ DiGeorge's syndrome is a developmental defect that prevents the
maturation of the thymus. What cell type would be reduced by this
condition?
A) Macrophages
B) Lymphocytes
C) T cells
D) B cells Answer: C) T cells
◉ The cells active in both innate and adaptive immunity develop
from common pluripotent precursors in the bone marrow called
,A) killer cells.
B) stem cells.
C) B cells.
D) leukocytes. Answer: B) stem cells.
◉ What is the major drawback of live attenuated vaccines?
A) They are not effective in adults.
B) They require more secondary reimmunizations than other
vaccines.
C) They can cause disease in some immunocompromised
individuals.
D) They do NOT provide a long-lasting secondary immune response.
Answer: C) They can cause disease in some immunocompromised
individuals.
◉ The mechanism that selects for antigen-reactive T cells that
respond to foreign antigens while ignoring self-antigens is called
clonal
A) expansion.
B) deletion.
C) anergy.
D) development. Answer: B) deletion.
,◉ Which of the following is an example of artificially acquired
passive immunity?
A) Someone suspected of exposure to Clostridium tetani is given an
injection of antibodies (antiserum).
B) An infant acquires immunity to some diseases from his mother
through breast milk.
C) A young child is given an influenza vaccination prior to the start
of flu season.
D) A college student develops immunity after becoming ill with
chicken pox for the first time. Answer: A) Someone suspected of
exposure to Clostridium tetani is given an injection of antibodies
(antiserum).
◉ An individual has a child who is immunocompromised while
undergoing medical treatment. As a result, the child's pediatrician
recommends that no one in the family get a particular vaccine.
Which of the following most likely describes the vaccine in question?
A) The vaccine contains inactivated virus.
B) The vaccine contains killed virus.
C) The vaccine contains viable virus.
D) The vaccine contains an attenuated virus. Answer: D) The vaccine
contains an attenuated virus.
, ◉ Paul had chicken pox when he was 5 years old. Nicholas received
the chicken pox vaccines. Which type of immunity does each man
have?
A) Paul has artificial active immunity while Nicholas has natural
active immunity.
B) Paul has natural active immunity while Nicholas has natural
passive immunity.
C) Paul has natural active immunity while Nicholas has artificial
active immunity.
D) Paul has natural active immunity while Nicholas has artificial
passive immunity. Answer: C) Paul has natural active immunity
while Nicholas has artificial active immunity.
◉ The life-threatening condition that may develop during a type I
hypersensitivity reaction is called
A) toxic shock.
B) septic shock.
C) anaphylaxis.
D) stroke. Answer: C) anaphylaxis.
◉ Why are secondary or "booster" reimmunizations given?
A) Frequent secondary reimmunizations are needed because the
immune system doesn't remember antigens for more than a few
years.
2026 QUESTIONS WITH SOLUTIONS GRADED
A+
◉ Which of the following are molecular mediators of inflammation?
A) immunoglobulins
B) lipopolysaccharide
C) erythrocytes
D) both chemokines and cytokines Answer: D) both chemokines and
cytokines
◉ DiGeorge's syndrome is a developmental defect that prevents the
maturation of the thymus. What cell type would be reduced by this
condition?
A) Macrophages
B) Lymphocytes
C) T cells
D) B cells Answer: C) T cells
◉ The cells active in both innate and adaptive immunity develop
from common pluripotent precursors in the bone marrow called
,A) killer cells.
B) stem cells.
C) B cells.
D) leukocytes. Answer: B) stem cells.
◉ What is the major drawback of live attenuated vaccines?
A) They are not effective in adults.
B) They require more secondary reimmunizations than other
vaccines.
C) They can cause disease in some immunocompromised
individuals.
D) They do NOT provide a long-lasting secondary immune response.
Answer: C) They can cause disease in some immunocompromised
individuals.
◉ The mechanism that selects for antigen-reactive T cells that
respond to foreign antigens while ignoring self-antigens is called
clonal
A) expansion.
B) deletion.
C) anergy.
D) development. Answer: B) deletion.
,◉ Which of the following is an example of artificially acquired
passive immunity?
A) Someone suspected of exposure to Clostridium tetani is given an
injection of antibodies (antiserum).
B) An infant acquires immunity to some diseases from his mother
through breast milk.
C) A young child is given an influenza vaccination prior to the start
of flu season.
D) A college student develops immunity after becoming ill with
chicken pox for the first time. Answer: A) Someone suspected of
exposure to Clostridium tetani is given an injection of antibodies
(antiserum).
◉ An individual has a child who is immunocompromised while
undergoing medical treatment. As a result, the child's pediatrician
recommends that no one in the family get a particular vaccine.
Which of the following most likely describes the vaccine in question?
A) The vaccine contains inactivated virus.
B) The vaccine contains killed virus.
C) The vaccine contains viable virus.
D) The vaccine contains an attenuated virus. Answer: D) The vaccine
contains an attenuated virus.
, ◉ Paul had chicken pox when he was 5 years old. Nicholas received
the chicken pox vaccines. Which type of immunity does each man
have?
A) Paul has artificial active immunity while Nicholas has natural
active immunity.
B) Paul has natural active immunity while Nicholas has natural
passive immunity.
C) Paul has natural active immunity while Nicholas has artificial
active immunity.
D) Paul has natural active immunity while Nicholas has artificial
passive immunity. Answer: C) Paul has natural active immunity
while Nicholas has artificial active immunity.
◉ The life-threatening condition that may develop during a type I
hypersensitivity reaction is called
A) toxic shock.
B) septic shock.
C) anaphylaxis.
D) stroke. Answer: C) anaphylaxis.
◉ Why are secondary or "booster" reimmunizations given?
A) Frequent secondary reimmunizations are needed because the
immune system doesn't remember antigens for more than a few
years.
