Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 22, Problem 9SQ
Summary Introduction
Introduction: Cancer is caused due to abnormal cell growth. This occurs due to several genetic and epigenetic alterations that cause uncontrolled proliferation of cells.
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__________________ is a condition that results when cytotoxic T cells attack the body’s own cells.a. An allergic response b. Autoimmune disease c. Passive immunityd. Active immunity
What 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.
Suppose a person recovers normally from viral infections, but then gets the same viral infections over and over again- unlike the rest of us.
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Chapter 22 Solutions
Human Biology (MindTap Course List)
Ch. 22 - Prob. 1RQCh. 22 - Prob. 2RQCh. 22 - Prob. 3RQCh. 22 - Prob. 4RQCh. 22 - Prob. 5RQCh. 22 - Prob. 6RQCh. 22 - Prob. 1SQCh. 22 - Prob. 2SQCh. 22 - Prob. 3SQCh. 22 - Prob. 4SQ
Ch. 22 - Prob. 5SQCh. 22 - Tumor suppressor genes _____. a. occur normally in...Ch. 22 - Prob. 7SQCh. 22 - The most common therapeutic approaches to treating...Ch. 22 - Prob. 9SQCh. 22 - Prob. 10SQCh. 22 - Prob. 1CTCh. 22 - A textbook on cancer contains the following...Ch. 22 - Ultimately, cancer kills because it spreads and...Ch. 22 - Over the last few months, your best friend, Mark,...Ch. 22 - Some desperate cancer patients consume pills or...
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- The benefit of specific immunity is the production of ________ that provide long-lasting protection. A) antibodies B) plasma cells C) T helper cells D) memory cellsarrow_forwardWhich of these is not part of insect immunity? (A) enzyme activation of pathogenkilling chemicals (B) activation of natural killer cells (C) phagocytosis by hemocytes (D) production of antimicrobial peptidesarrow_forwardWhich 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 epitopesarrow_forward
- How do corticosteroids act to block inflammation? a. Blocking neutrophil migration b. Blocking mast cells degranulation c. Blocking macrophage activation d. Blocking the synthesis of arachidonic acidarrow_forwardThe complement system of defense is composed of proteins that are always present in the blood. Which statement describes the importance of this system in early pathogen defense? A.) It does not have to be activated by antibodies. B.) It rapidly lower the blood pH. C.) It recognizes specific common pathogens. D.) It causes immediate pathogen lysis.arrow_forwardThe vascular changes of inflammationa. lead to an increase in bacterial cells at the injury site.b. decrease the number of leukocytes at the injury site.c. allow plasma proteins to move easily from the bloodstream to theinjury site.d. increase the number of antibodies at the injury site.e. activate lymphocytes.arrow_forward
- Explain 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_forwardDiGeorge syndrome is a congenital disease that results in a poorly developed, nonfunctioning thymus gland. Which of the following would be a likely problem experienced by a baby with DiGeorge syndrome? a. lack of B cells b. lack of antibodies c. lack of T cells d. lack of macrophagesarrow_forward. Which of these is not part of insect immunity?(A) enzyme activation of pathogen-killingchemicals(B) activation of natural killer cells(C) phagocytosis by hemocytes(D) production of antimicrobial peptidesarrow_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_forwardmatch the cytokine with its description. 1.Interleukin-1 2.Interleukin-2 3.Interleukin-12 a. Stimulates formation of TH1 helper T lymphocytes b. Stimulates ACTH secretion c.Stimulates proliferation of cytotoxic T lymphocytes d.Stimulates proliferation of B lymphocytesarrow_forwardTable/Graph attached below. 1. Analyze the data provided and answer the following: a) Compare your body’s response to antigen “A” both times you were exposed. Describe at least two ways in which the body’s response is different. b) Why might your body’s second response to “antigen A” have been so different? What changes may have occurred to your immune system?arrow_forward
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