Human Biology: Concepts and Current Issues, Books a la Carte Edition (8th Edition)
8th Edition
ISBN: 9780134154008
Author: Michael D. Johnson
Publisher: PEARSON
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Question
Chapter 9, Problem 7TY
Summary Introduction
Introduction:
DiGeorge syndrome is a 21q11.2 deletion syndrome. It is caused by the loss of a segment of chromosome number 22. It is an autosomal dominant trait indicating that only one of the affected chromosome is needed for the disease to occur. The conditions associated with this disorder include kidney problems, an autoimmune disorder as well as hearing loss.
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Chapter 9 Solutions
Human Biology: Concepts and Current Issues, Books a la Carte Edition (8th Edition)
Ch. 9 - Prob. 1QCCh. 9 - Prob. 2QCCh. 9 - Define the term pathogen and give some examples.Ch. 9 - Prob. 2CRCh. 9 - Prob. 3CRCh. 9 - Prob. 4CRCh. 9 - Prob. 5CRCh. 9 - Describe in general terms the distinction between...Ch. 9 - Describe the concept of an antigen and how it...Ch. 9 - Prob. 8CR
Ch. 9 - Prob. 9CRCh. 9 - Prob. 10CRCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 -
6. Which of the following is a benefit of...Ch. 9 - Prob. 7TYCh. 9 -
8. The following are steps in phagocytosis: (1)...Ch. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 11TYCh. 9 - Prob. 12TYCh. 9 - Which of the following increases the likelihood of...Ch. 9 - Which of the following does not belong with the...Ch. 9 - Which of the following statements about HIV is...Ch. 9 - Prob. 1AWKCh. 9 - Prob. 2AWKCh. 9 -
3. Everyone knows that bacteria can cause...Ch. 9 - Prob. 4AWKCh. 9 - Prob. 5AWKCh. 9 - Why is it that most people get the chicken pox...Ch. 9 - The immune system is supposed to defend us from...
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- 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_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_forwardof the choices, which cells stimulate directly B cells to divide and produce antibodies? a. mast cells b. marcophages c. Nk cells d. TH cellsarrow_forward
- Which of these statements about T lymphocytes is false? a. Saome T cells promote the activity of B cells. b. Some T cells suppress the activity of B cells. c. Some T cells secrete interferon. d. Some T cells produce antibodies.arrow_forwardStem cells responsible for the process of lymphopoiesis are located in the (a) thymus and spleen. (b) lymph nodes. (c) red bone marrow. (d) a, b, and c are correct.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
- 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 responsearrow_forwardWhich of the following is the most likely future outcome for a thymocyte just entering the thymus? A) activation by a B-cell B) apoptosis C) differentiation into a Tc cell D) migration to a lymph node E) formation of a granulomaarrow_forwardWhich of the choices is required to activate a helper T cell, which in turn can stimulate antibody production by B cells? A)An antibody displayed by a major histocompatibility complex protein B)A major histocompatibility complex protein alone C)An antigen displayed by a major histocompatibility complex protein D)An antigen alonearrow_forward
- Which of the following describes the developmental pathway for T cells? a. thymus → bone marrow → spleen b. thymus → bone marrow → thymus c. bone marrow → thymus → lymph nodes d. lymph nodes → thymus → spleen e. bone marrow → lymph nodes → thymus.arrow_forwardWhat is the function of the blood-thymus barrier?a. It protects maturing T-lymphocytes from antigens inthe blood.b. It filters the blood and starts an immune response whennecessary.c. It subdivides the thymus into a cortex and a medulla.d. It forms thymic corpuscles.arrow_forwardMatch the immune cell with its main function. ___dendritic cell a. professional phagocyte ___B cell b. antigen-presenter ___helper T cell c. activates other lymphocytes ___NK cell d. makes antibodies ___macrophage e. kills ailing body cells that lack MHC markersarrow_forward
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