45. What is the specific term for the substance capable of triggering an inappropriate or harmful immune response to a harmless substance such as ragweed pollen? a. antigen b. microbe c. allergen d. autoimmune disease 46. How do the cells in the immune system recognize an antigen as “foreign” or “nonself?” a. through an allergic response b. through blood type c. through fine hairs protruding from the antigen surface d. through characteristic shapes on the antigen surface 47. After you have had the chicken pox, your immune system will be able to do all of the following EXCEPT a. prevent your offspring from infection by the chicken pox virus. b. distinguish between your body cells and that of the chicken pox virus. c. “remember” previous experiences with the chicken pox virus. d. match up and counteract nonself molecules in the form of the chicken pox virus. 48. Which of the following best expresses the main idea of this passage? a. An antigen is any substance that triggers an immune response. b. The basic function of the immune system is to distinguish between self and nonself. c. One of the immune system’s primary functions is the allergic response. d. The human body presents an opportune habitat for microbes. 49. Why would tissue transplanted from father to daughter have a greater risk of being detected as foreign than a tissue transplanted between identical twins? a. The age of the twins’ tissue would be the same and therefore less likely to be rejected. b. The identical twin’s tissue would carry the same self-markers and would therefore be less likely to be rejected. c. The difference in the sex of the father and daughter would cause the tissue to be rejected by the daughter’s immune system. d. The twins’ immune systems would “remem- ber” the same encounters with childhood illnesses. 50. What is the meaning of the underlined word int ricacies as it is used in the first sentence of the passage? a. elaborate interconnections b. confusion of pathways c. inherent perplexity d. comprehensive coverage – POSTTEST– 166 Answer Key – POSTTEST– 167 1. c. Lesson 3 2. b. Lesson 1 3. b. Lesson 18 4. c. Lesson 2 5. a. Lesson 8 6. c. Lesson 14 7. d. Lesson 1 8. a. Lesson 1 9. b. Lesson 2 10. c. Lesson 8 11. c. Lesson 4 12. d. Lesson 12 13. c. Lesson 3 14. d. Lesson 11 15. a. Lesson 4 16. b. Lesson 3 17. c. Lesson 12 18. b. Lesson 13 19. a. Lesson 11 20. d. Lesson 12 21. a. Lesson 8 22. d. Lesson 16 23. d. Lesson 6 24. b. Lesson 11 25. b. Lesson 16 26. d. Lesson 17 27. a. Lesson 1 28. a. Lesson 16 29. c. Lesson 3 30. b. Lesson 3 31. c. Lesson 6 32. d. Lesson 16 33. d. Lesson 13 34. c. Lesson 16 35. c. Lesson 4 36. a. Lesson 3 37. b. Lesson 1 38. d. Lesson 2 39. a. Lesson 9 40. c. Lesson 4 41. a. Lesson 1 42. b. Lesson 3 43. c. Lesson 8 44. b. Lesson 1 45. c. Lesson 3 46. d. Lesson 9 47. a. Lesson 6 48. b. Lesson 2 49. b. Lesson 9 50. a. Lesson 3 . b. Lesson 3 17. c. Lesson 12 18. b. Lesson 13 19. a. Lesson 11 20. d. Lesson 12 21. a. Lesson 8 22. d. Lesson 16 23. d. Lesson 6 24. b. Lesson 11 25. b. Lesson 16 26. d. Lesson 17 27. a. Lesson. coverage – POSTTEST– 166 Answer Key – POSTTEST– 1 67 1. c. Lesson 3 2. b. Lesson 1 3. b. Lesson 18 4. c. Lesson 2 5. a. Lesson 8 6. c. Lesson 14 7. d. Lesson 1 8. a. Lesson 1 9. b. Lesson 2 10 4 36. a. Lesson 3 37. b. Lesson 1 38. d. Lesson 2 39. a. Lesson 9 40. c. Lesson 4 41. a. Lesson 1 42. b. Lesson 3 43. c. Lesson 8 44. b. Lesson 1 45. c. Lesson 3 46. d. Lesson 9 47. a. Lesson 6 48.