Chapter 13 Effector Responses: Cell and Antibody-Mediated Immunity

Chapter 13 Effector Responses: Cell and Antibody-Mediated Immunity1. What is the effector molecule of humoral immunity? A. Antibodies B. Cytotoxic T cells C. Dendritic cells D. Helper T cells E. Plasma cells - AnswerAnswer: A Section: Introduction Difficulty: 1 Hint: Humoral immunity is based on activated B cells. 2. The role of cell-mediated immunity is: A. to find cells infected with intracellular pathogens. B. to find and eliminate cells infected with intracellular pathogens. C. to present antigens to TH cells. D. to produce memory B cells. E. to secrete antibodies. - AnswerAnswer: B Section: Introduction Difficulty: 1 Hint: Cell-mediated immunity uses T cells. 3. Cell mediated immunity includes: A. antibodies. B. plasma cells. C. TC cells. D. TH cells. E. Both C and D - AnswerAnswer: E Section: Introduction Difficulty: 1 Hint: Cell-mediated immunity uses T-lineage cells. 4. Examples of cytotoxic effector cells include all of the following EXCEPT: A. basophils. B. eosinophils. C. macrophages. D. NK cells. E. TC cells. - AnswerAnswer: A Section: Introduction Difficulty: 2 Hint: Cytotoxic effector cells are responsible for inducing cell death of the target cell. 5. NK T cells (NKTs) express: A. CD4. B. CD8. C. CD12. D. CD33. E. Both A and B - AnswerAnswer: A Section: Introduction Difficulty: 1 Hint: TH CD expression 6. _______ describes the action of antibodies whereby antibodies bind to a pathogen and prevent the pathogen from interacting with cell receptors. A. Antibody-dependent cell-mediated cytotoxicity B. Antigen presentation C. Complement fixation D. Neutralization E. Opsonization - AnswerAnswer: D Section: Antibody-Mediated Effector Functions Difficulty: 1 Hint: Blocking of receptors prevents a pathogen from invading a host cell. 7. _______ describes the recruitment of phagocytic cells by the Fab portion of an antibody. A. Antibody-dependent cell-mediated cytotoxicity B. Antigen presentation C. Complement fixation D. Neutralization E. Opsonization - AnswerAnswer: E Section: Antibody-Mediated Effector Functions Difficulty: 1 Hint: Recruitment of phagocytes 8. Lysis of a pathogen by MAC formation is an example of: A. antibody-dependent cell-mediated cytotoxicity. B. antigen presentation. C. complement fixation. D. neutralization. E. opsonization. - AnswerAnswer: C Section: Antibody-Mediated Effector Functions Difficulty: 2 Hint: MAC formation is a result of complement.