Question 5 (1 point) Choose two words that BEST describe adaptive immunity. production of antibodies production of antigens production of memory cells skin, mucous membranes, hair inlammatory response
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Step 1: Adaptive immunity is the body's specific defense system that targets particular pathogens. Show more…
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Adaptive immunity is also known as antigen-specific immunity and includes the components of the immune system that produce allergic responses. It is the acquired ability to recognize and destroy a particular pathogen or its product through previous exposure to that pathogen or its products. Choose the correct words to complete the descriptions of the components of the adaptive immune response. 1. Mast cells undergo degranulation to release their contents, which cause inflammation. 2. Plasma cells develop from certain B cells (not all) and secrete antibodies. 3. T cell receptors bind antigen, but only when it is presented by a structure on another cell. 4. Class I MHC presents peptides to T cells and is only found on specific types of nucleated cells. 5. APCs include B cells, dendritic cells, and macrophages. 6. Igs are released by plasma B cells and interact with antigens. 7. Class II MHC presents peptides to T cells and is found on the membranes of all nucleated cells.
Adi S.
The immune system produces antibodies that attack the body's own tissues. Select one: a. allergic reactions b. vaccination c. autoimmunity d. humoral immunity e. cellular immunity
Madhur L.
1. Consider a genetic mutation which causes T helper cells to be unable to respond to stimulation by the cytokines which lead to TH2 differentiation. This mutation would cause a patient to be deficient in which activity? a) production of memory cells b) decrease of the immune response once the pathogen is eliminated c) production of antibodies d) action of cytotoxic T cells 2. Which of the following statements best describes the goal of the first line of immune defense? a) To provide long-term immunity against antigens b) To prevent pathogen entry c) To perform phagocytic clearance of microorganisms that invade sterile tissues d) To initiate a fever so that heat-sensitive pathogens may be killed 3. In contrast to a primary response, humoral memory _____. a) provides a slower response b) generates antibodies with reduced affinity for its antigen c) generates reduced antibody levels d) generates higher antibody levels 4. Which of the following is an example of the second and third lines of defense working together? a) normal microbiota competing with pathogens b) complement is activated by antibodies bound to a target cell c) inflammation attracting macrophages (for phagocytosis) d) TH cells activating B cells 5. Select all the false statements about artificially acquired immunity. a) It may generate memory cells. b) It can be passive. c) It can be active. d) It may be generated by vaccines. e) An example includes the transfer of antibodies across the placenta.
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