Biochemistry MCQ Quiz Hub

1. Lack of reaction to our own human leukocyte antigens (HLAs) is known as?
autoimmunity
complement system
clonal selection
tolerance

2. Which of the following components of the vertebrate immune response occurs first upon invasion by a virus or bacterium?
Activation of killer T lymphocytes
Activation of B lymphocytes
The inflammatory response
Mobilization of complement proteins

3. Which of the following white blood cells act as scavengers when they engulf and digest pathogens?
Macrophages
T cells
B cells
Lymphocytes

4. A cell which defends against body cells in which viruses are reproducing is
Exotoxin
Cytotoxic T cell
Endotoxin
Suppressor T cell

5. Which of the following is most likely to produce anaphylaxis in a susceptible individual?
Pollen
Mold
Dust
Bee sting

6. What type of B cell remains dormant in the body but can respond rapidly if the same antigen appears again?
T cells
Memory cells
Plasma cells
Macrophages

7. The maturation of T cells and the production of particular T cell receptors occurs in the
thyroid gland
thymus gland
testes
. all of these

8. Which of the following provide specific defense against viruses and bacteria?
T cells
B cells
Complement
inflammation

9. Which of these is a type of specific defense against pathogens?
Lymphocytes
Macrophages
Phagocytes
Leukocytes

10. In animals blood clots serve the function of
consuming invading organisms
helping them match the background coloration of the habitat
stimulating production of killer T lymphocytes
repairing damage to the body wall

11. What is the result of invasion of a body by pathogens?
Infection
Inflammation
Swelling
Pus

12. What is the behavior in which T cells and B cells constantly travel throughout the body seeking out and destroying foreign substances?
Antibody-mediated immune response
Immune surveillance
Cell-mediated immune response
Vaccination

13. In a fetus where are lymphocytes produced?
In the spleen
In the bone marrow
In the liver
In the heart

14. Which of the following produces the antibodies employed in the specific immune response of vertebrates?
B lymphocytes
T lymphocytes
Neutrophils
Macrophages

15. Which of the following is not part of the vertebrate immune system?
Lymphocytes
Antibodies
Cardiac glycosides
Lymph nodes

16. The protein produced by B cells that binds to a specific antigen is
phagocyte
leukocyte
vaccine
antibody

17. Which of the following characteristics are common in lymphocytes macrophages and neutrophils?
They are all part of the nonspecific immune response in vertebrates
They are all part of the specific immune response in vertebrates
They are all part of the internal defenses of nonvertebrates
They are all types of white blood cells

18. Which of the following blood proteins can destroy pathogens?
Major histocompatibility complex
Platelets
Fibrinogen
Complement system

19. Which of these is part of the lymphoid system in humans?
Liver
Stomach
Tonsils
Kidneys

20. What type of B cell is like a tiny factory that produces antibodies identical to the B cell receptor that bind to the original antigen?
T cells
Memory cells
Plasma cells
Macrophages