1. Which of the following is an example of artificial active
immunity?
A. Immunization with a vaccine
B. Passing of antibodies through the placenta
C. Natural infection with a pathogen
D. Transfer of antibodies from mother to child via breast milk
Answer: a) Immunization with a vaccine
Rationale: Artificial active immunity is obtained through
vaccination, where the immune system is exposed to a non-
virulent form of a pathogen, triggering an immune response.
2. What is the primary purpose of the immune system?
A. To regulate body temperature
B. To protect the body from pathogens
C. To produce hormones
D. To digest food
Answer: b) To protect the body from pathogens
Rationale: The immune system's primary function is to identify
and defend the body against harmful pathogens like bacteria,
viruses, and other foreign invaders.
,3. Which of the following molecules is responsible for the allergic
response?
A. IgG
B. IgE
C. IgA
D. IgM
Answer: b) IgE
Rationale: IgE is the antibody involved in allergic reactions,
triggering the release of histamine and other chemicals from mast
cells.
4. What is the main function of the complement system?
A. To produce antibodies
B. To directly kill pathogens
C. To enhance phagocytosis and inflammation
D. To regulate immune cell production
Answer: c) To enhance phagocytosis and inflammation
Rationale: The complement system consists of proteins that
enhance the immune response by promoting inflammation,
opsonization of pathogens, and cell lysis.
5. Which cell type is responsible for producing antibodies?
A. T cells
, B. B cells
C. Macrophages
D. Dendritic cells
Answer: b) B cells
Rationale: B cells are responsible for producing antibodies, which
are proteins that bind to and neutralize pathogens.
6. Which of the following best describes the concept of
immunological tolerance?
A. The immune system targets foreign cells
B. The immune system attacks the body’s own tissues
C. The immune system recognizes and accepts self-cells as non-
threatening
D. The immune system produces antibodies against all foreign
substances
Answer: c) The immune system recognizes and accepts self-cells as
non-threatening
Rationale: Immunological tolerance is the process by which the
immune system does not attack the body’s own cells, avoiding
autoimmune reactions.
7. Which of the following is an example of a T-independent
antigen?
A. Protein from a virus
immunity?
A. Immunization with a vaccine
B. Passing of antibodies through the placenta
C. Natural infection with a pathogen
D. Transfer of antibodies from mother to child via breast milk
Answer: a) Immunization with a vaccine
Rationale: Artificial active immunity is obtained through
vaccination, where the immune system is exposed to a non-
virulent form of a pathogen, triggering an immune response.
2. What is the primary purpose of the immune system?
A. To regulate body temperature
B. To protect the body from pathogens
C. To produce hormones
D. To digest food
Answer: b) To protect the body from pathogens
Rationale: The immune system's primary function is to identify
and defend the body against harmful pathogens like bacteria,
viruses, and other foreign invaders.
,3. Which of the following molecules is responsible for the allergic
response?
A. IgG
B. IgE
C. IgA
D. IgM
Answer: b) IgE
Rationale: IgE is the antibody involved in allergic reactions,
triggering the release of histamine and other chemicals from mast
cells.
4. What is the main function of the complement system?
A. To produce antibodies
B. To directly kill pathogens
C. To enhance phagocytosis and inflammation
D. To regulate immune cell production
Answer: c) To enhance phagocytosis and inflammation
Rationale: The complement system consists of proteins that
enhance the immune response by promoting inflammation,
opsonization of pathogens, and cell lysis.
5. Which cell type is responsible for producing antibodies?
A. T cells
, B. B cells
C. Macrophages
D. Dendritic cells
Answer: b) B cells
Rationale: B cells are responsible for producing antibodies, which
are proteins that bind to and neutralize pathogens.
6. Which of the following best describes the concept of
immunological tolerance?
A. The immune system targets foreign cells
B. The immune system attacks the body’s own tissues
C. The immune system recognizes and accepts self-cells as non-
threatening
D. The immune system produces antibodies against all foreign
substances
Answer: c) The immune system recognizes and accepts self-cells as
non-threatening
Rationale: Immunological tolerance is the process by which the
immune system does not attack the body’s own cells, avoiding
autoimmune reactions.
7. Which of the following is an example of a T-independent
antigen?
A. Protein from a virus
