BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 50, Problem 5U
Receptors that trigger innate immune responses
a. are antibodies recognizing specific antigens.
b. are T-cell receptors recognizing specific antigens.
c. recognize pathogen-associated molecular patterns.
d. are not specific at all.
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The first cell to initiate an adaptive immune response to a novel pathogen is _____.
A. an antigen presenting cell such as a neutrophil or macrophage
B. a helper T cell in the lymph nodes
C. a B cell that binds a pathogen at the site of infection
D. a memory cell that is activated directly by the pathogen
Which 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 epitopes
Activated helper T Cells participate in which of the following processes?
a.) Differentiation of memory B cells
b.) Activation of cytotoxic T Cells
c.) Facilitation of macrophage phagocytosis
d.) All of above
Chapter 50 Solutions
BIOLOGY
Ch. 50.1 - Prob. 1LOCh. 50.1 - Prob. 2LOCh. 50.1 - Prob. 3LOCh. 50.2 - Prob. 1LOCh. 50.2 - Prob. 2LOCh. 50.2 - Prob. 3LOCh. 50.3 - Prob. 1LOCh. 50.3 - Prob. 2LOCh. 50.4 - Explain how antibody diversity is generated.Ch. 50.4 - Prob. 2LO
Ch. 50.4 - Prob. 3LOCh. 50.5 - Define autoimmune diseases.Ch. 50.5 - Prob. 2LOCh. 50.6 - Explain antigenantibody reactions in the ABO blood...Ch. 50.6 - Prob. 2LOCh. 50.6 - Prob. 3LOCh. 50.7 - Prob. 1LOCh. 50.7 - Prob. 2LOCh. 50 - How would a high level of HCG present in a urine...Ch. 50 - What would happen if an NK cell killed a virally...Ch. 50 - Prob. 2IQCh. 50 - Prob. 3IQCh. 50 - Prob. 4IQCh. 50 - Cells that target and kill body cells infected by...Ch. 50 - Structures on invading cells recognized by the...Ch. 50 - Which one of the following acts as the alarm...Ch. 50 - Prob. 4UCh. 50 - Receptors that trigger innate immune responses a....Ch. 50 - Diseases in which the persons immune system no...Ch. 50 - Suppose that a new disease is discovered that...Ch. 50 - You start a new job in a research lab. The lab...Ch. 50 - In comparing T-cell receptors and immunoglobulins...Ch. 50 - If you have type AB blood, which of the following...Ch. 50 - Suppose that you get a paper cut while studying....Ch. 50 - If you wanted to cure allergies by bioengineering...Ch. 50 - Why do we need to be repeatedly vaccinated for...Ch. 50 - Prob. 7ACh. 50 - Suppose you take a job in the marketing department...Ch. 50 - Prob. 2SCh. 50 - Prob. 3SCh. 50 - Toll-like receptors have been found in a wide...
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- Adaptive immunity includes both humoral and cell-mediated immune responses, which interact but also have distinct roles in adaptive immunity. Identify the example of a strictly cell-mediated immune response. A. A cytotoxic T cell destroys an infected host cell. B. A helper T cell activates a B cell. C. A B cell gives rise to plasma cells, which release antibodies. D. An antigen is taken in by an antigen-presenting cell.arrow_forwardThe innate immune response is characterized by itsa. rapid response to invading pathogens.b. ability to “remember” pathogens it has already encountered.c. ability to produce antibodies.d. Both b and c are correct.arrow_forwardWhat are the roles of the innate immune system? Select all that apply. A. identity self vs. non-self B. provide a physical barrier to infection C. initiate inflammation D. suppress proliferation E. call for help from the adaptive immune system F. circulate fluids through the lymphatic systemarrow_forward
- Which of the following should be the same inidentical twins?(A) the set of antibodies produced(B) the set of MHC molecules produced(C) the set of T cell antigen receptors produced(D) the set of immune cells eliminated as self-reactivearrow_forwardWhat is the function of cytotoxic T-cells? Select one: a. They are long lived cells that provide life long immunity b. They kill cells that have the antigen they recognize c. They pump out chemical weapons & stimulate other T & B cells d. They produce and secrete antibodiesarrow_forwardExplain why each choice (a-d) is correct or incorrect. A vaccine is effective because a. The vaccine contains the antibodies necessary to fight infection. b. The vaccine contains the lymphocytes necessary to fight infection. c. The secondary response of the adaptive immunity is faster and more efficient than the primary response. d. B lymphocytes are unable to mount an immune response the first time they are exposed to a new pathogen.arrow_forward
- Suppose a person recovers normally from viral infections, but then gets the same viral infections over and over again- unlike the rest of us. A. What is probably wrong –B cells, helper T cells and/or cytotoxic T cells? B. Should this person be at a higher risk of cancer than the rest of us? C. Should this person be able to lyse bacterial cells as well as the rest of us? D. Should this person tolerate a graft (from an unreated person) better than you are me?arrow_forwardDuring the adaptive immune response, the role of helper T cells includes _____. Mark all that apply. Group of answer choices a. using CD8 to identify cells that are infected with pathogens b. facilitating clonal selection c. using CD4 to recognize antigen presenting cells d. activating mitosis in B cells e. auto-activation of mitosis (self-activating mitosis to produce more helper T and memory T cells) f.using T cell receptors to bind epitopes on pathogensarrow_forwardAdaptive immunity includes which of the following processes? Question 2 options: A) phagocytosis B) inflammation C) production of antibody D) production of interferonarrow_forward
- Which of the following is a function of cytokines? A. Promote antibody invaders. B. Help T cells recognize invaders. C. Attract white blood cells to a possible invader. D. Destroy cancer cells.arrow_forwardChoose the most accurate characteristic of B cells. A) They help establish and control the sensitivity of the immune response. B) They stimulate the activities of T cells. C) They attack foreign cells, normal cells infected with viruses, and cancer cells that appear in normal tissues. D) They continually monitor peripheral tissues. E) They differentiate into plasma cells that secrete antibodies.arrow_forwardWhich of the following pairs is mismatched? a. activation of memory cells: secondary immune response b. central memory T cells: restricted to non-lymphoid tissues c. protective immunity: antibodies persist after primary immune response d. attenuated vaccine: not pathogenic e. vaccination: primary immune response.arrow_forward
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