Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 9, Problem 7AWK
The immune system is supposed to defend us from harmful microorganisms. Why doesn't it always work? In other words, why do some people still get sick and die?
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Chapter 9 Solutions
Human Biology: Concepts and Current Issues (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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- An antigen acts is a molecule that acts like a name tag, allowing the immune system to recognize the cell it is attached to. The name tag might say: "Hello I'm... a deadly virus," or “Hello I'm... a healthy human cell." It is very important that an antigen for a deadly virus and a healthy human cell are very different, so that the immune system does not make a mistake and attack healthy human body cells. Which of the following molecules do you think would make good antigens for recognizing a pathogen? Justify your answer. You may choose more than one. 1) a cell wall protein 2) a piece of DNA inside a cell 3) a protein that is part of a flagella 4) a uniquely shaped protein that is part of a virus 5) a protein that is only made by prokaryotic cells 6) a protein that is only made by eukaryotic cellsarrow_forwardAlthough the immune system has two arms, it has been said, “No T cells, no immunity.” How is this so?arrow_forwardThis term describes an antigen that is too small to be immunogenic, however it binds to proteins in the body to increase its size, allowing it to then be able to trigger an immune reaction: O 1) hapten O 2) alloantigen 3) superantigen O 4) epitopearrow_forward
- Bryan is a physician at a major metropolitan hospital. Since the attacks of September 11, 2001, his hospital has been preparing for a terrorist attack. Why does the CDC recommend using antibiotics only when exposure to disease is suspected or confirmed?arrow_forwardWhich one of the following statements regarding our innate immune system is false? Question 15 options: The normal flora takes up space so that pathogenic microbes can't grow. The skin prevents entry of microbes into the body. Coughing speeds up the ciliary escalator, while smoking can destroy it. Phagocytosis destroys microbes that have escaped our physical and chemical barriers. Macrophages create antibodies against specific microbes.arrow_forwardHow do vaccines protect us from diseases? Which cells in the immune system become activated after the injection?arrow_forward
- Three things that we can do to build our Immune system arearrow_forwardIf our immune system can recognize any foreign antigen, why is it necessary to vaccinate a person?arrow_forwardWhat is the one cell type that does the most to coordinate and control the adaptive immune response? A) cytotoxic T cells B) antibodies C) helper T cells D) B cellsarrow_forward
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