BIOLOGY W/ 2YR CONNECT CODE >LL< >IC<
12th Edition
ISBN: 9781259694639
Author: Mader
Publisher: MCG
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Chapter 33, Problem 2TS
Compare the ways in which natural killer cells and cytotoxic T cells recognize the cells they are going to kill. Why does it make good biological sense for NK cells and cytotoxic T cells to recognize, for example,virus-infected cells in these different ways?
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Which statement best describes the difference between responses of effector B cells (plasma cells) and those of cytotoxic T cells? (A) B cells confer active immunity;cytotoxic T cells confer passive immunity. (B) B cells respond the first time a pathogen is present; cytotoxic T cells respond subsequent times. (C) B cells secrete antibodies against a pathogen; cytotoxic T cells kill pathogen-infected host cells. (D) B cells carry out the cell-mediated response; cytotoxic T cells carry out the humoral response.
Explain the mechanism by which NK cells are able to engage a highly specific antigen receptor during their activation.
Cytotoxic T cells are immune cells that can eliminate some virus-infected cells.
a. Briefly describe how activated cytotoxic T cells can kill virus-infected cells.
Chapter 33 Solutions
BIOLOGY W/ 2YR CONNECT CODE >LL< >IC<
Ch. 33.1 - Describe the function of sentinel cells in...Ch. 33.1 - Prob. 2CYPCh. 33.1 - Prob. 3CYPCh. 33.2 - Distinguish between the lymphatic and circulatory...Ch. 33.2 - Prob. 2CYPCh. 33.2 - Prob. 3CYPCh. 33.3 - Prob. 1CYPCh. 33.3 - Prob. 2CYPCh. 33.3 - Prob. 3CYPCh. 33.3 - Prob. 4CYP
Ch. 33.4 - Distinguish between antibody-mediated immunity and...Ch. 33.4 - Prob. 2CYPCh. 33.4 - Prob. 3CYPCh. 33.5 - Prob. 1CYPCh. 33.5 - Prob. 2CYPCh. 33.5 - Prob. 3CYPCh. 33 - Prob. 1BS.1QCCh. 33 - Prob. 1BS.2QCCh. 33 - Prob. 1BS.3QCCh. 33 - Prob. 1NS.1QCCh. 33 - Prob. 1NS.2QCCh. 33 - Prob. 1NS.3QCCh. 33 - Prob. 1ACh. 33 - Prob. 2ACh. 33 - Prob. 3ACh. 33 - Prob. 4ACh. 33 - Prob. 5ACh. 33 - Prob. 6ACh. 33 - Prob. 7ACh. 33 - Prob. 8ACh. 33 - Prob. 9ACh. 33 - Prob. 10ACh. 33 - Prob. 11ACh. 33 - Prob. 12ACh. 33 - Prob. 13ACh. 33 - Prob. 14ACh. 33 - Prob. 15ACh. 33 - Prob. 16ACh. 33 - Prob. 17ACh. 33 - Prob. 18ACh. 33 - Prob. 19ACh. 33 - A child with severe combined immunodeficiency will...Ch. 33 - Prob. 21ACh. 33 - Prob. 22ACh. 33 - Prob. 23ACh. 33 - Prob. 1TSCh. 33 - Compare the ways in which natural killer cells and...Ch. 33 - Prob. 3TSCh. 33 - Prob. 4TS
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- The Adaptive Immune Response Is a Specific Defense Against Infection Name the class of molecules that includes antibodies, and name the five groups that make up this class.arrow_forwardExplain why each choice (a-d) is correct or incorrect. In order for an antigen to activate or sensitize a T helper cell, the antigen must be a. coated with antibodies b. displayed on the surface of an APC along with MHC antigens c. displayed on the surface of another T cell with IgD antibodies d. partly digested by a natural killer cellarrow_forwardWith the aid of a hand drawn diagram, briefly explain how T cells are primed or activated by B cells. In your response, briefly outline the major differences between B and T cell activationarrow_forward
- Which statement describes a limitation of T-cell receptors (TCRs) compared to B-cell receptors (BCRs)? only BCRs recognize pathogen epitopes only BCRs can initiate a pathogen-specific immune response only BCRs can interact with epitopes on free antigens or epitopes displayed directly on the pathogenarrow_forwardDescribe the function of both T and B memory cells in the immune response. What type of immunity do they provide?arrow_forward. Which does NOT describe humoral immunity? Group of answer choices a. Antibodies are secreted by T-helper cells b. Humoral immunity is effective against circulating toxins c. Some B cells become memory cells d. cytotoxic t cells can make antibodiesarrow_forward
- A hypothetical disorder prevents memory cells from forming. What effect would this have on the immune system? B lymphocytes would be affected, but not T lymphocytes, Vaccinations would no longer be useful, The inflammatory response would no longer be effective, or The adaptive immune response would cease to function, but the innate immune response would continue to function normally.arrow_forwardThese two cells destroy an infected cell by releasing chemicals that cause apoptosis. a. NK cell and cytotoxic T-lymphocyte b. macrophage and NK cell c. helper T-lymphocyte and cytotoxic T-lymphocyte d. B-lymphocyte and T-lymphocytearrow_forwardWhich statement describes a limitation of T-cell receptors (TCRs) compared to B-cell receptors (BCRs)? A.) only BCRs can interact with epitopes on free antigens or epitopes B.) displayed directly on the pathogen C.) only BCRs can initiate a pathogen-specific immune response D.) only BCRs recognize pathogen epitopesarrow_forward
- Inflammation is the hallmark of an activated immune response. Explain how inflammation is triggered by both innate and adaptive immune mechanisms. Are the inflammatory cells the same for both methods of activation? Why does inflammation subside as an infection is controlled?arrow_forwardProvide one common feature and two differences between B-cell receptors and PRRs.arrow_forwardWhat is the function of Regulatory T-cells answer in one paragrapharrow_forward
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