1. Which of these is not true of both T cells and B cells?
A. They are both lymphocytes.
B. They both pass through the thymus.
C. They both are responsible for immunity.
D. They both have receptor sites.

2. Which of the following is not true regarding B cells?
A. require an antigen-presenting cell
B. specific response
C. antibody-mediated immunity
D. synthesis and release of antibodies

3. Memory cells of the immune system are derived from
A. T lymphocytes
B. B lymphocytes
C. plasma cells
D. microglia cells

4. The lung surfactant consists of
A. protein
B. phospholipid
C. polysaccharide
D. protein and phospholipid
E. phospholipid and polysaccharide

5. Which of the following will increase the rate of firing of the SA node?
A. acetylcholine
B. norepinephrine
C. epinephrine
D. norepinephrine and epinephrine
E. All of these choices are true

6. Which of these is specifically responsible for antibodymediated immunity?
A. T cells
B. B cells
C. platelets
D. All of the choices are correct.

7. Each hemoglobin contains an iron-containing pigment called a
A. ferrin
B. globin
C. heme
D. globulin

8. T cells
A. are responsible for cell mediated immunity.
B. stimulate and suppress B cells.
C. have passed through the thymus.
D. have receptor sites.
E. All of the choices are correct.

9. How does complement kill foreign microbes?
A. by agglutinating them
B. by causing them to burst
C. by inactivating their ribosomes
D. by creatine perforin

10. Plasma cells are most closely related to which of the following?
A. T lymphocytes
B. macrophages
C. neutrophils
D. B lymphocytes
E. platelets