What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 27, Problem 5MC
Summary Introduction
Introduction:
The T and B lymphocytes are the cells that are responsible for specific immunity.
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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.
Which cells produce antibodies?
a. Neutrophils.
b. Dendritic cells.
c. Cytotoxic T cells.
d. Plasma cells.
The role of the humoral immune response is to
a. kill infected cellsb. fight pathogens found in body fluid
c. prevent pathogens from entering the body
d. initiate an inflammatory response
The immune system can identify foreign cells in the bloodstream because these foreign cellsa. are observed destroying other cells by the immune system.b. have cell surface proteins that are different from thebody’s own cell surface proteins.c. have CD4 receptors similar to T cells.d. All of the above.
Chapter 27 Solutions
What Is Life? A Guide to Biology with Physiology
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Similar questions
- 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 pathogenarrow_forwardSuppose 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_forwardWhat type of cells secrete antibodies? A) Cytotoxic T cells B) Helper T cells C) B cells D) Plasma cells E) Antigen-presenting cellsarrow_forward
- Which of the following pairs is mismatched? a. plasma cell: mediation of phagocytosis and killing of microorganisms in the plasma b. megakaryocyte: formation of platelets c. dendritic cell: activation of adaptive immune responses d. natural killer cell: develops from a common lymphoid progenitor e. neutrophil: formation of pus f. regulatory T cell: inhibition of T-cell activity.arrow_forwardWhich of the following is NOT true about T cells?(a) T cells develop from lymphoid stem cells in the bonemarrow and mature in the thymus.(b) Cell-mediated immunity is primarily carried out by Tcells.(c) Subsequent differentiation of T cells produces cytotoxic(killer) T cells, delayed-hypersensitivity T cells, helper Tcells, and regulatory T cells.(d) Natural killer cells (NK) are exclusively differentiated Tcells.(e) T cells act in situations where antigens are embeddedin cell membranes or are inside host cells and thus areinaccessible to antibodies.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_forward
- 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 abovearrow_forwardA drug that were to inhibit the activity of T suppressor cells would lead to _______. a. decreased activity of T cells b. increase in infection c. increase activation of B cells no responsearrow_forwardThe process of generating the diversity of T cell receptors as t cells mature is done how? a. through inherited exposure to antigens in utero b. None of these c. Through a process of exposure to antigens from the environment d. Through random recombination of the genes used to code for T cell receptorsarrow_forward
- During 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_forwardCompare and contrast the activities of B cells and T cells.arrow_forwardExplain why each choice (a-d) is correct or incorrect. T cells are differentiated into two groups based on their glycoproteins CD4 or CD8. Which of the following is true of CD4 T cells? a. They become cytotoxic T cells. b. The become antigen presenting cells. c. They become T helper cells. d. They become plasma cells.arrow_forward
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