Question

Which immune cells produce antibodies? a) T cells b) B cells c) Macrophages d) Neutrophils
3. Which part of the immune system responds the fastest? a) Adaptive immunity b) Innate immunity c)
Both equally d) None of the above
4. Which of the following is an example of specific immunity? a) Skin barrier b) Stomach acid c)
Antibody production d) Mucus
5. Vaccines work by: a) Killing pathogens directly b) Training the immune system to recognize antigens
c) Increasing fever d) None of the above
6. Which is the first line of defense? a) Antibodies b) Skin c) T cells d) Memory cells
7. Which of these is part of the innate immune system? a) Antibody production b) Fever c) Memory
cells d) Vaccines
8. Which organ produces white blood cells? a) Liver b) Bone marrow c) Kidney d) Pancreas

Answer 1

1. B cells — b)
(Activated B cells differentiate into plasma cells that secrete antibodies.)

3. Innate immunity — b)
(It responds fastest — minutes to hours — whereas adaptive immunity takes days.)

4. Antibody production — c)
(Specific immunity = adaptive immunity, e.g., antigen-specific antibody responses.)

5. Training the immune system to recognize antigens — b)
(Vaccines expose the immune system to antigens to generate a protective response and memory.)

6. Skin — b)
(The skin is a primary physical barrier — first line of defense.)

7. Fever — b)
(Fever is an innate immune response; antibody production and memory cells are adaptive, vaccines are not part of innate immunity.)

8. Bone marrow — b)
(The bone marrow is the primary site of white blood cell production.)