30 Immunology Quiz Questions and Answers

Immunology is a branch of biomedical science that focuses on the study of the immune system, which is the body’s defense mechanism against infections, diseases, and foreign substances. It is a complex and essential system that plays a crucial role in protecting the body from harmful pathogens, such as bacteria, viruses, fungi, and parasites.

Key aspects of immunology include:

Immune System Components: The immune system consists of various specialized cells, tissues, and organs. Some of the key components include white blood cells (leukocytes), lymph nodes, spleen, thymus, bone marrow, and lymphatic vessels.

Immune Response: When the body encounters a foreign substance or pathogen, it triggers an immune response. This response involves the activation and coordination of different immune cells to eliminate the invader and initiate the healing process.

Antigens and Antibodies: Antigens are molecules or parts of pathogens that trigger an immune response. Antibodies are proteins produced by the immune system that recognize and neutralize antigens.

Adaptive and Innate Immunity: The immune system can be divided into two main types: innate immunity and adaptive immunity. Innate immunity provides immediate, non-specific defense against pathogens, while adaptive immunity offers specific and long-lasting protection by creating memory cells.

In this article

• Part 1: 30 immunology quiz questions & answers
• Part 2: Download immunology questions & answers for free
• Part 3: Free online quiz creator – OnlineExamMaker

Part 1: 30 immunology quiz questions & answers

1. What is immunology?
a) The study of the immune system
b) The study of the nervous system
c) The study of the digestive system
d) The study of the respiratory system
Answer: a) The study of the immune system

2. What is the primary function of the immune system?
a) To transport oxygen throughout the body
b) To regulate body temperature
c) To defend against infections and foreign substances
d) To control muscle movement
Answer: c) To defend against infections and foreign substances

3. Which of the following is not a component of the immune system?
a) White blood cells
b) Lymph nodes
c) Muscles
d) Spleen
Answer: c) Muscles

4. What are antigens?
a) Immune cells
b) Pathogens
c) Foreign substances that trigger an immune response
d) Antibodies
Answer: c) Foreign substances that trigger an immune response

5. Which type of immunity provides immediate, non-specific defense against pathogens?
a) Innate immunity
b) Adaptive immunity
c) Passive immunity
d) Acquired immunity
Answer: a) Innate immunity

6. What are antibodies?
a) Pathogens
b) Immune cells
c) Proteins produced by the immune system to neutralize antigens
d) White blood cells
Answer: c) Proteins produced by the immune system to neutralize antigens

7. Which type of immunity provides specific and long-lasting protection through memory cells?
a) Innate immunity
b) Adaptive immunity
c) Passive immunity
d) Acquired immunity
Answer: b) Adaptive immunity

8. What is the process of introducing weakened or inactivated pathogens to stimulate an immune response called?
a) Immunotherapy
b) Antibody therapy
c) Immunization
d) Vaccination
Answer: d) Vaccination

9. What is the term for the medical treatment that enhances or suppresses the immune system to treat diseases?
a) Immunotherapy
b) Antibiotic therapy
c) Immunization
d) Vaccination
Answer: a) Immunotherapy

10. Which of the following is an example of an autoimmune disease?
a) Influenza
b) Tuberculosis
c) Rheumatoid arthritis
d) Malaria
Answer: c) Rheumatoid arthritis

11. Which of the following is an example of an immunodeficiency disorder?
a) Diabetes mellitus
b) HIV/AIDS
c) Hypertension
d) Asthma
Answer: b) HIV/AIDS

12. What is the study of the genetic factors that influence the immune system called?
a) Immunogenetics
b) Immunotherapy
c) Immunization
d) Immunopathology
Answer: a) Immunogenetics

13. What is the term for the process where the immune system mistakenly attacks the body’s own cells and tissues?
a) Immunodeficiency
b) Immunization
c) Autoimmunity
d) Allergy
Answer: c) Autoimmunity

14. What is the primary function of lymph nodes in the immune system?
a) To produce antibodies
b) To filter and trap pathogens
c) To regulate body temperature
d) To carry oxygen to tissues
Answer: b) To filter and trap pathogens

15. Which of the following is a function of the thymus gland in the immune system?
a) Production of red blood cells
b) Production of antibodies
c) Maturation of T-cells
d) Regulation of body temperature
Answer: c) Maturation of T-cells

Part 2: Download immunology questions & answers for free

16. Which type of T-cells directly attack and destroy infected cells?
a) Helper T-cells
b) Memory T-cells
c) Cytotoxic T-cells
d) Regulatory T-cells
Answer: c) Cytotoxic T-cells

17. Which type of T-cells play a role in regulating the immune response?
a) Helper T-cells
b) Memory T-cells
c) Cytotoxic T-cells
d) Regulatory T-cells
Answer: d) Regulatory T-cells

18. Which type of white blood cell is responsible for producing antibodies?
a) Neutrophils
b) Eosinophils
c) B-cells
d) Natural killer cells
Answer: c) B-cells

19. What is the term for the process where B-cells mature and develop the ability to produce antibodies?
a) Clonal expansion
b) Opsonization
c) Antibody production
d) B-cell activation
Answer: d) B-cell activation

20. What is the function of dendritic cells in the immune system?
a) Phagocytosis of pathogens
b) Production of antibodies
c) Presentation of antigens to T-cells
d) Regulation of body temperature
Answer: c) Presentation of antigens to T-cells

21. Which type of hypersensitivity reaction involves IgE antibodies and mast cells?
a) Type I hypersensitivity
b) Type II hypersensitivity
c) Type III hypersensitivity
d) Type IV hypersensitivity
Answer: a) Type I hypersensitivity

22. What is the term for the process where pathogens are coated with antibodies to enhance phagocytosis?
a) Clonal expansion
b) Opsonization
c) Antibody production
d) B-cell activation
Answer: b) Opsonization

23. What is the function of memory cells in adaptive immunity?
a) To directly attack and destroy infected cells
b) To regulate the immune response
c) To produce antibodies
d) To provide rapid and long-lasting protection upon re-exposure to the same pathogen
Answer: d) To provide rapid and long-lasting protection upon re-exposure to the same pathogen

24. Which type of immunoglobulin is the first antibody produced during an immune response?
a) IgA
b) IgE
c) IgG
d) IgM
Answer: d) IgM

25. Which type of immunoglobulin is involved in allergic reactions and defense against parasitic infections?
a) IgA
b) IgE
c) IgG
d) IgM
Answer: b) IgE

26. Which type of immunoglobulin can cross the placenta and provide passive immunity to the fetus?
a) IgA
b) IgE
c) IgG
d) IgM
Answer: c) IgG

27. Which type of immunoglobulin is found in secretions such as saliva, tears, and breast milk?
a) IgA
b) IgE
c) IgG
d) IgM
Answer: a) IgA

28. What is the process of deliberately introducing antigens into the body to induce immunity called?
a) Immunization
b) Immunotherapy
c) Immunodeficiency
d) Autoimmunity
Answer: a) Immunization

29. Which immune cells are responsible for engulfing and destroying pathogens through phagocytosis?
a) B-cells
b) T-cells
c) Natural killer cells
d) Macrophages
Answer: d) Macrophages

30. The thymus is most active during:
a) Childhood
b) Adolescence
c) Adulthood
d) Old age
Answer: a) Childhood

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