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

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

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter34: Immunity

Section: Chapter Questions

Problem 4SA

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Similar questions

Which of the following is not a part of innate immunity? a. phagocytic cells e. inflammation b. fever f. complement activation c. histamines g. presenting antigen d. cytokines h. all take part
Which 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.
Why is the secondary immune response so much stronger than theprimary response?a. Because high concentrations of antibodies are already presentb. Because the phagocytes present the antigens more rapidlyc. Because memory B cells can rapidly convert to plasma cellsd. Because protein synthesis occurs more quickly in memory cells
Which of the following accurately describes the inducibility of adaptive immunity? A) a given immune response acts against a specific antigen possessed by a pathogen B) both cells and antibodies are involved in immune responses C) immune cells acting against a given pathogen increase greatly in number upon encountering that pathogen D) immune responses against the body's own molecules do not normally occur E) pathogens stimulate cells involved in adaptive immunity
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
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.
Which of the following describes the self-tolerance of adaptive immunity? A) a given immune response acts against a specific antigen possessed by a pathogen B) both cells and antibodies are involved in immune responses C) immune responses against previously encountered pathogens are faster and more potent D) immune responses against the body's own molecules do not normally occur E) pathogens stimulate cells involved in adaptive immunity
What 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 system
Antibody-mediated immunitya. works best against intracellular antigens.b. regulates the activity of T cells.c. cannot be transferred from one person to another.d. is responsible for immediate hypersensitivity reactions.
Which of the following accurately describes the inducibility of adaptive immunity? A) a given immune response acts against a specific antigen possessed by a pathogen B) both cells and antibodies are involved in immune responses C) immune cells acting against a given pathogen increase greatly in number upon encountering that pathogen D) immune responses against previously encountered pathogens are faster and more potent E) immune responses against the body's own molecules do not normally occur F) pathogens stimulate cells involved in adaptive immunity
Our first line of defense are barrier __________ that block pathogen entry. Once a pathogen makes its way across these barriers, ___________ blood cells such as Mast Cells recognize these pathogens and release __________ and other molecules that lead to recruitment of other immune cells and ____________ . Here are the choices for the question. a) tissues b) cytokines c) white d) inflammation
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.