Multiple Choice
A nonself substance that can provoke an immune response is called a(n) __________.
21. The Immune System
Antigens
Back21. The Immune System
Antigens
- Open QuestionWhat are the three classes of lymphocytes, and where does each class originate?
- Open QuestionA decrease in which population of lymphocytes would impair all aspects of an immune response? (a) cytotoxic T cells, (b) helper T cells, (c) regulatory T cells, (d) B cells, (e) plasma cells.
- Open QuestionPerforins are proteins associated with the activity of (a) T cells, (b) B cells, (c) NK cells, (d) plasma cells.
- Open QuestionSmall molecules that must combine with large proteins to become immunogenic are calleda. complete antigens,b. kinins,c. antigenic determinants,d. haptens.
- Multiple ChoiceLymphocytes that develop immunocompetence in the thymus are __________.
- Multiple Choice
Which of the following cell types are antigen-presenting cells (APCs).
1. Macrophages 2. Neutrophils 3. B cells 4. T cells 5.Plasma Cells
- Open Question
Mark the following statements as true or false. If a statement is false, correct is to make a true statement.
b. The secondary immune response is mediated by plasma cells.
- Open QuestionHow does a cytotoxic T cell destroy another cell displaying antigens bound to class I MHC proteins?
- Open QuestionAlthough the adaptive immune system has two arms, it has been said, 'no T cells, no immunity.' Explain.
- Multiple ChoiceToll-like receptors are found on __________.
- Open Question
Mr. White developed neutropenia as a consequence of cancer chemotherapy, which destroyed much of his bone marrow. What other components of the immune system would be harmed by bone marrow destruction? Would you expect his hematocrit to be elevated or decreased? What effects would you expect to see from this change in hematocrit? (Connects to Chapter 19)
- Open QuestionMr. James, an 80-year-old man, is grumbling about having to receive a flu shot every year. Flu viruses have a high mutation rate (undergo rapid genetic changes), which results in the appearance of new proteins on the flu virus's 'coat.' How does this help explain the need to get a flu shot each year?
- Multiple Choice__________ is the property of lymphocytes that prevents them from attacking the body's own cells.
- Open QuestionBlocking the antigen receptors on the surface of lymphocytes would interfere with (a) phagocytosis of the antigen, (b) that lymphocyte's ability to produce antibodies, (c) antigen recognition, (d) the ability of the lymphocyte to present antigen, (e) opsonization of the antigen.