Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 37.7, Problem 1HYEW
Summary Introduction
To determine:
Why an individual gets colds so often.
Introduction:
Disease or illness which is caused by influenza viruses is termed as flu (influenza). It is a contagious illness that mainly affects the respiratory organs of the body. The manifestation of influenza include; high fever, cough, and runny nose.
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Is it possible for the immune system to eliminate the viruses without T cells? Why or why not?
The National Institutes of Health (NIH) set up a study to determine
whether large doses of vitamin C would shorten the length of time it takes
to recover from a cold. Three thousand volunteers were split into two
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daily. Group B received 3,000 mg of a placebo. At the end of the two-week
period, the researchers inserted live cold viruses directly into the noses of
all the volunteers. The volunteers in both Group A and B continued to take
their daily pills. All the volunteers got colds, and there was no significant
difference in the length of time the colds lasted.
What is the experimental group in this example? Select the best answer.
Group B.
Three thousand volunteers.
Group A.
The live cold virus.
Length of time the colds lasted.
The vitamin C.
Size of pill (3000 mg).
Comparing the number of infections, people catch cold so much more often than flu .Why haven’t we spent time and effort on developing vaccines to the cold virus ? a)The cold viral particle change over time, too difficult to develop a vaccine b)The cold viral remain stable over time and lose their ability to infect human over time c)The cold viral particle constantly change over time , catch a cold virus will result in vaccination for a long time d)There are too many strains of the cold virus and the symptoms are mild
Chapter 37 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 37.1 - compare and contrast the terms microbe and...Ch. 37.1 - Prob. 2CYLCh. 37.2 - If phagocytes kill most species of bacteria that...Ch. 37.2 - describe the external barriers to Infection,...Ch. 37.2 - Prob. 1TCCh. 37.2 - Prob. 2CYLCh. 37.3 - Prob. 1CYLCh. 37.3 - Prob. 2CYLCh. 37.4 - Prob. 1CYLCh. 37.4 - Prob. 2CYL
Ch. 37.4 - Prob. 3CYLCh. 37.5 - Prob. 1CYLCh. 37.5 - Prob. 2CYLCh. 37.6 - Prob. 1CYLCh. 37.6 - Prob. 2CYLCh. 37.7 - explain how antibiotics, antiviral drugs, and...Ch. 37.7 - Prob. 1ETCh. 37.7 - Prob. 1HYEWCh. 37.7 - Prob. 1TCCh. 37.7 - Prob. 2CYLCh. 37.8 - Prob. 1CYLCh. 37.8 - What might be the evolutionary advantage of...Ch. 37.9 - Prob. 1CSRCh. 37.9 - Prob. 1CTCh. 37.9 - Prob. 1CYLCh. 37.9 - describe current medical treatments against...Ch. 37 - Why is it essential that antibodies and T-cell...Ch. 37 - External defenses against microbial invasion...Ch. 37 - Prob. 1MCCh. 37 - Prob. 1RQCh. 37 - Prob. 2ACCh. 37 - Prob. 2FIBCh. 37 - Prob. 2MCCh. 37 - Prob. 2RQCh. 37 - Prob. 3FIBCh. 37 - Molecules that label your cells as self are a....Ch. 37 - Describe humoral immunity and cell-mediated...Ch. 37 - Prob. 4FIBCh. 37 - Prob. 4MCCh. 37 - Prob. 4RQCh. 37 - Prob. 5FIBCh. 37 - The immune system usually does not attack your...Ch. 37 - Prob. 5RQCh. 37 - Prob. 6FIBCh. 37 - Prob. 6RQCh. 37 - What are memory cells? How do they contribute to...Ch. 37 - Prob. 8RQCh. 37 - Prob. 9RQCh. 37 - Prob. 10RQCh. 37 - Prob. 11RQ
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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_forwardCan Cytomegalovirus (CMV) release any toxicant? What I mean is if the virus perform any kind of chemical rection while inactive like when it is in the environment releasing toxins or when is active inside the host such as inside the human body?arrow_forwardIf our immune system can recognize any foreign antigen, why is it necessary to vaccinate a person?arrow_forward
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