Reinforcement And Study Guide Section Two
Name Date Class Chapter Reinforcement and Study Guide 39 Immunity From Disease, continued Section 39.2 Defense Against Infectious DiseasesIn your textbook, read about the innate immune system.Determine if the statement is true. If it is not, rewrite the italicized part to make it true.
Healthy skin is a good defense against the invasion of pathogens because it is free of bacteria. A physical barrier that prevents the entry of pathogens into the body2.
In your trachea, saliva traps microbes and prevents them from entering your lungs. Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Macrophages migrate into the bloodstream when the body is challenged by a pathogen.
Out of body tissues and into infected areas4. Phagocytes at the site of an infection or inflammation destroy pathogens by surrounding and engulf- ing them. The third line of defense against infection is the consumption of pathogens by neutrophils.
Monocytes that mature to become macrophages6. Interferon is produced by cells infected by pathogenic bacteria. VirusesIn your textbook, read about acquired immunity.Circle the letter of the choice that best completes the statement.7.
The human lymphatic system is important ina. Filtering pathogens from lymph. Keeping body fluids constant.c. Resistance to disease. All of the above.8. Tissue fluid is found b. In the bloodstream.
In lymph vessels. In lymph ducts. Around body cells.9. The main function of lymph nodes is to b. Filter lymph. Store red blood cells. Trigger an immune response.
Study Guide Answers
Filter excess fluid.10. A reservoir for lymphocytes that can be transformed into specific disease-fighting cells is thea. Thymus gland. Thyroid gland.c. Pituitary gland. Pancreas.172 CHAPTER 39 BIOLOGY: The Dynamics of Life REINFORCEMENT AND STUDY GUIDE Name Date Class Chapter Reinforcement and Study Guide 39 Immunity From Disease, continued Section 39.2 Defense Against Infectious Diseases, continued In your textbook, read about antibody immunity and cellular immunity.
Complete each sentence. Acquiredimmunity is the building up of a resistance to a specific pathogen.
Two types of immunity that involve different kinds of cells and cellular actions are antibody immunity and cellular immunity. The presence of foreign antigens in the body triggers the production of antibodies by plasma cells. A Bcell is a lymphocyte that, when activated by a Tcell, becomes a plasma cell and produces antibodies. Cellular immunity involves several different types of T cells.
A killerTcell releases enzymes directly into the pathogens. Complete the table by checking the correct columns for each example. Type of ImmunityCopyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. Example Cellular Antibody 17. Involves the protection of antibodies 18. Simulated by antigens in the body 19.
Clones of killer T cells produced 20. Memory cells produced so the body can respond quickly to a second attack 21. Key role played by antigen-antibody complex 22. T cells destroyed by pathogens directly REINFORCEMENT AND STUDY GUIDE CHAPTER 39 BIOLOGY: The Dynamics of Life 173 Name Date ClassChapter Reinforcement and Study Guide 39 Immunity From Disease, continued Section 39.2 Defense Against Infectious Diseases, continuedIn your textbook, read about passive and active immunity to infectious diseases.Answer the following questions.23. Distinguish between active and passive immunity. Active immunity develops as a result of direct exposure to antigens; passive immunity results from acquiring antibodies through inoculations, or via the placenta or breast milk.24. In what two ways can passive immunity develop?
(1) naturally, when antibodies are transferred from mother to fetus or nursing infant; (2) artificially, via injection25. What is a vaccine?
A substance made up of weakened or dead pathogens, or parts of pathogens that, injected into the body, will cause active immunityIn your textbook, read about AIDS and the immune system. Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.For each statement below, write true or false.true 26. The virus that causes AIDS—Human Immunodeficiency Virus—is well- named because it attacks the immune system.false 27. HIV can be transmitted by air.true 28.
A child born to a woman who is infected with HIV is at high risk for being infected, too.false 29. HIV destroys a person’s resistance to disease by attacking and destroying memory T cells.false 30. In a blood sample from an HIV-positive person, you would expect to find most of the viruses existing free in the blood, rather than being hidden inside cells.false 31. If a person is infected with HIV, he or she will usually develop AIDS within about a year.true 32. The cause of death for a person with AIDS usually is some type of infection that the body’s weakened immune system can no longer fight off.true 33.
Quizlet
The majority of persons infected with HIV will develop AIDS.174 CHAPTER 39 BIOLOGY: The Dynamics of Life REINFORCEMENT AND STUDY GUIDE.
Quick Study
Read Study Guide and Reinforcement - Answer Key text version Study Guide and Reinforcement Answer Key gpscience.com To the Teacher Study Guide and Reinforcement booklet provides an additional resource for reviewing the concepts of the chapter. There is one worksheet for each section, or lesson, of the chapter. The Study Guide worksheets are designed to focus primarily on science content and less on vocabulary, although knowledge of the section vocabulary supports understanding of the content. The worksheets are designed for the full range of students. Copyright © by The McGraw-Hill Companies, Inc. All rights reserved. Except as permitted under the United States Copyright Act, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher.
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