MasteringBiology With eText - Access
7th Edition
ISBN: 9780321911940
Author: Johnson
Publisher: PEARSON
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Chapter 9, Problem 12TY
Summary Introduction
Introduction:
Immunity is defined as the overall capability of an organism to protect itself from any foreign agent. It can be divided into innate and acquired immunity. Innate immunity consists of nonspecific, physical barriers that prevent foreign agents to enter the body. Examples are nasal hair, mucus lining on the epithelium of urogenital tract, respiratory tract, the acid in stomach etc. Acquired immunity consists of humoral immunity (antigen-mediated) and cell-mediated immunity (T-lymphocyte mediated). Acquired or adaptive immunity can be subdivided into naturally and artificially acquired both of which are further divided into active and passive immunity.
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Students have asked these similar questions
____________ are suspensions of killed or live germs which is employed to induce the production of antibodies and bring forth immunity.a) Vaccines b) Medicines c) Antibiotics d) Antigens
Immunoglobins help eliminate the pathogen through the process of:
A. Release of hydrolytic enzymes on the pathogen
B. Agglutination and precipitation
C. Direct phagocytosis
D. Activating platelets
Active immunization, as compared to passive, _______.
A) only provides short term protection
B) extended immunological memory
C) is only used in cases where passive immunization fails to provide protection
D) is only available to infants
Chapter 9 Solutions
MasteringBiology With eText - Access
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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- What is the first step in the antigen-antibody interaction? A.) opsonization B.) epitope production C.) neutralization D.) phagocytosis E.) agglutinationarrow_forwardCan you explain the passive and active immunities?arrow_forwardWhy are most unimmunized children protected against diseases such as measles?Choose one: A. They lack the host cells for viral replication. B. They are protected by herd immunity. C. They have developed immunity toward the measles virus. D. They still have circulating maternal antibodies.arrow_forward
- 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_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_forward
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