Immunity+that+is+specific+ok

Specific Immunity

1. B cells and T cells have antigen receptors on their surface. What is an antigen receptor? (p. 130) plasma membrane receptor protein whose shape allows it to combine with antigens. 2. If the antigen is the key, what is the lock? (p.130) the receptor 3. How many types of antigen receptors does one T cell or B cell have? (p. 130) like a million. 4. How many different types of B cells and T cells do we need? Why? (p. 130) as many as needed to match up with the antigens. 5. How many different types of B cell and T cells do we have? (p. 130) two B and three T 6. What is the special name for the antigen receptor on a B cell? (p. 131) BCR 7. If an antigen and a B-cell receptor make a lock and key match, what does the B-cell do? (p. 131) copies itself. 8. What does clonal expansion of the B-cells mean? When does this occur? (p. 131) in the lymph nodes and it means they copy themselves and spread. 9. What are plasma cells? (p. 131) circulate the blood in the lymph 10. What is an antibody with respect to the B-cell receptor? (p.131) memory cells 11. What are memory cells? (p. 131) provide for long term immunity. Are present to fight infection before its present. 12. Why is B-cell defense called antibody mediated defense? (p.131) antibody-mediated immunity 13. How do antibodies fight infection? (p.132) they produce antibodies 14. What is the name for the antigen receptor on a T-cell? (p. 134) TCR 15. T cell receptors cannot recognize antigen alone, the antigen must be attached to a self protein on a self cell. This protein is called the... (p. 134) APC 16. If the T cell lock matches an antigen key, what happens to the T cell? (p. 134) 17. What do cytotoxic T cells do to cells that have antigens that match their T-cell receptor? (p. 135) clonal expansion 18. How do helper T-cells indirectly fight disease? (p. 135) the release cytokines that enhance the response of all types of immune cells.

19. Which of pertain(s) to B cells? c. synthesize and liberate antibodies
 * a. have specific receptors
 * b. are responsible for antibody mediated immunity

20. Which of these pertain(s) to cytotoxic-T cells? a. have specific receptors b. are more than one type
 * c. are responsible for cell-mediated immunity
 * d. stimulate antibody production by B-cells