Science (Need in 3 hours)

1. Which of the following is a protein produced by the immune system in response to an infectious agent? (Points : 2)

Question 2. 2. Several inherited deficiencies in the Complement system occur in humans. Which of the following would be the most severe? (Points : 2)

Question 3. 3. Macrophages and neutrophils are primary components in which branch of the immune system? (Points : 2)

Question 4. 4. The best definition of antigen is: (Points : 2)

Question 5. 5. B cells are part of which branch of the immune system? (Points : 2)

Question 6. 6. What is the primary role of neutrophils in an immune response? (Points : 3)

Question 7. 7. Which of the following can activate Natural killer (NK) cells? (Points : 3)

Question 8. 8. Macrophages are activated by antigens coated in which Complement protein? (Points : 3)

Question 9. 9. Which of the following cell types is NOT involved in innate immunity? (Points : 3)

Question 10. 10. The Complement protein cascade is the same for the classical pathway, alternative pathway, and lectin pathway beginning with the activation of: (Points : 3)

Question 11. 11. Natural killer cells secrete chemicals that activate ___________. (Points : 3)

Question 12. 12. An immune cell ingests dead cells, bacteria, and viral components and then internally digests these agents. This process is known as: (Points : 3)

Question 13. 13. A B cell cannot be activated without the help of a specialized T cell. (Points : 3)

Question 14. 14. Which of the following recognizes antigens displayed on host cells with MHC II? (Points : 3)

Question 15. 15. Which of the following is an antigen presenting cell (APC)? (Points : 3)

Question 16. 16. Which class of antibodies are the first to respond to an infection? (Points : 3)

Question 17. 17. Which class of antibodies indicate prior exposure to an antigen? (Points : 3)

Question 18. 18. MHC class __ molecules can be found on almost all cells in the human body: (Points : 3)

Question 19. 19. A B cell is referred to as _______when it has not been exposed to an antigen. (Points : 3)

Question 20. 20. immunity involving T cells is referred to as______ immunity. (Points : 3)

Question 21. 21. Which of the following is NOT used by cytotoxic T cells to kill their target cells? (Points : 3)

Question 22. 22. The T cell that interacts with MHC I molecules is (Points : 3)

Question 23. 23. Which of the following is considered the major antigen presenting cell in the body? (Points : 3)

Question 24. 24. A T cell that expresses the CD8 receptor on its surface is (Points : 3)

Question 25. 25. Which of the following is NOT a subtype of Helper T cell? (Points : 3)

Question 26. 26. The helper T cell is activated by which other cell? (Points : 3)

Question 27. 27. Which of the following does NOT interact with T helper cells? (Points : 3)

Question 28. 28. The most common location to find a naïve T cell is: (Points : 3)

Question 29. 29. Where do most lymphocytes come in contact with their antigen? (Points : 3)

Question 30. 30. When a lymph node becomes swollen, the most common reason is (Points : 3)

Question 31. 31. Which event is the primary reason that the innate and cellular immune systems may be turned down or off? (Points : 3)

Question 32. 32. Which of the following is an example of a primary lymphoid organ? (Points : 3)

Question 33. 33. T regulatory cells (T regs) function to (Points : 3)

Question 34. 34. Which organ is responsible for screening blood for the presence of pathogens? (Points : 3)

Question 35. 35. The human immune system ignores 'commensal' bacteria because: (Points : 3)