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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Students have asked these similar questions
The Human Immunodeficiency virus (HIV) cripples the specific immune response because HIV
OA) directly destroys macrophages
O B) directly destroys natural killer cells
OC) directly destroys suppressor T cells
OD) directly destroys helper T cells
OE) All of the above
Is immune tolerance good or bad?why?
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 cells
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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- This 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_forwardAlthough the immune system has two arms, it has been said, “No T cells, no immunity.” How is this so?arrow_forwardWhy is innate immunity referred to as nonspecific? because it is a form of defense found in all animal species because it provides defense against a wide range of pathogens because it is a form of defense that functions in all human body systems because it provides a built-in mechanism of defense that does not require "training"arrow_forward
- Do you think that any time we received a vaccine, our adaptive immune system is responsible for creating antibodies?arrow_forwardCan anyone get a disease even if the secondary immune response is triggered? (i.e.: is it possible for someone to contract a disease, even if they received the immunization?) Explain your answer. Would that mean that it’s better not to take the risk and avoid immunization altogether?arrow_forwardWhat does the Immune system do for the body?arrow_forward
- Which 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_forwardBryan 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_forwardHow do vaccines protect us from diseases? Which cells in the immune system become activated after the injection?arrow_forward
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Immune System and Immune Response Animation; Author: Medical Sciences Animations;https://www.youtube.com/watch?v=JDdbUBXPKc4;License: Standard YouTube License, CC-BY
Immune response: summary; Author: Dr Bhavsar Biology;https://www.youtube.com/watch?v=ADANgHkX4OY;License: Standard Youtube License