05:01B Cells vs T Cells | B Lymphocytes vs T Lymphocytes - Adaptive Immunity - Mechanism5MinuteSchool1209views2rank
05:01B Cells vs T Cells | B Lymphocytes vs T Lymphocytes - Adaptive Immunity - Mechanism5MinuteSchool308views
Multiple ChoiceA nonself substance that can provoke an immune response is called a(n) __________.1034views1rank
Textbook QuestionWhat are the three classes of lymphocytes, and where does each class originate?237views
Textbook 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.231views
Textbook QuestionPerforins are proteins associated with the activity of (a) T cells, (b) B cells, (c) NK cells, (d) plasma cells.249views
Textbook QuestionSmall molecules that must combine with large proteins to become immunogenic are called a. complete antigens, b. kinins, c. antigenic determinants, d. haptens.241views
Multiple ChoiceWhich of the following cell types are antigen-presenting cells (APCs). 1. Macrophages 2. Neutrophils 3. B cells 4. T cells 5.Plasma Cells122views
Textbook QuestionMark 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.202views
Textbook QuestionHow does a cytotoxic T cell destroy another cell displaying antigens bound to class I MHC proteins?242views
Textbook QuestionAlthough the adaptive immune system has two arms, it has been said, 'no T cells, no immunity.' Explain.357views
Textbook QuestionMr. 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)204views
Textbook 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?443views
Multiple Choice__________ is the property of lymphocytes that prevents them from attacking the body's own cells.585views
Textbook 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.251views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.b. The immune response to a viral infection involves NK cells and different kinds of lymphocytes.205views
Textbook QuestionCD4 markers are associated with (a) cytotoxic T cells, (b) regulatory T cells, (c) helper T cells, (d) all of these.329views
Textbook QuestionType I hypersensitivity is due to release of inflammatory mediators from_____, and type IV hypersensitivity is due to the actions of_____.a. TH cells; macrophagesb. neutrophils; TH cellsc. B cells; TC cellsd. mast cells; TH cells204views
Multiple ChoiceWhich type of disease results from the inability of the immune system to distinguish self- from nonself-antigens?1270views1rank
Textbook QuestionLymphocytes that develop immunocompetence in the bone marrow are a. T lymphocytes, b. B lymphocytes, c. NK cells, d. B and T lymphocytes.269views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct is to make a true statement.a. In the primary immune response, the lag phase lasts about 5 days, during which time B cells proliferate and differentiate.199views
Multiple Choice__________ are substances that can trigger the adaptive defenses and provoke an immune response.689views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.d. Cancer cells are destroyed by NK cells, TC cells, and macrophages.208views
Textbook QuestionGive a function for each of the following: (a) cytotoxic T cells, (b) helper T cells, (c) regulatory T cells, (d) plasma cells, (e) NK cells,239views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.e. Dendritic cells may activate both TH and TC cells.211views
Multiple ChoiceMany phagocytic immune cells such as macrophages and dendritic cells commonly engulf foreign or dangerous materials in the body. If these cells engulf antigens, the cells will present the antigens on their surface. Which immune cells will respond to these “presented” antigens and trigger an immune response if necessary?145views
Multiple ChoiceWhich of the following is NOT a key characteristic of adaptive immunity?1089views2rank
Textbook QuestionGive a function for each of the following: (f) stromal cells, (g) epithelial reticular cells, (h) interferons, (i) pyrogens, (j) T cells, (k) B cells,271views
Textbook QuestionWhen naïve B cells are activated, they differentiate into:a. plasma cells.b. memory cells.c. both a and b.d. none of the above.197views
Textbook QuestionOn which type(s) of cells are class I MHC molecules located?a. Antigen-presenting cells onlyb. B cells onlyc. All nucleated body cellsd. Antigen-presenting cells and B cells202views
Textbook QuestionFill in the blanks: Class I MHC molecules display_____antigens and activate_____cells. Class II MHC molecules display _____antigens and activate_____cells.191views
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