Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Chapter 20, Problem 3Q
Summary Introduction
To determine: The primary role of Helicobacter that whether it is a pathogen or a normal biota.
Introduction:
Infections or diseases refer to an abnormal condition of body that disrupts important physical and physiological function of body. Disease is caused by improper diet, lack of exercise, various infectious agents that are present in nature, toxic substances, genetic disorders, and depression, stress that play role in illness and disturbs normal functioning of body.
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Which of the following statements correctly describes exotoxins and endotoxins produced by various bacteria?
A. endotoxins are secreted into the environment while the bacteria are still alive
B. exotoxins are secreted into the environment while the bacteria are still alive
C. exotoxins are only released into the environment when the bacteria die and their cell walls break down
D. exotoxins are components of the outer membrane of the bacteria that produce them
Which of the following statements is incorrect?
a. Mucosal surfaces are better than skin surfaces at supporting colonization by commensal microorganisms.
b. The skin provides a larger surface area than mucosal surfaces for commensal microorganisms.
c. There are ten times as many bacteria residing in the intestinal tract than the number of cells in the human body.
d. It is common for commensal bacteria to live in symbiosis with their human hosts.
e. During gestation in mammals, a fetus does not have any commensal microorganisms on their skin or mucosal surfaces.
The table below shows the symptoms of some diseases that are caused by bacteria.
Disease
Symptoms
vomiting, abdominal pain, coughing,
muscular weakness, visual disturbance
botulism
inflammation of lungs, fever,
shortness of breath, fluid in lungs
pneumonia
typhoid fever
red rashes, high fever, intestinal bleeding
tetanus
uncontrolled contractions of voluntary muscles
Which two diseases listed in the table affect the digestive system? Be sure to support your reasoning with evidence from the table. Please write in complete sentences.
Chapter 20 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 20.1 - Prob. 1AYPCh. 20.1 - List the natural defenses present in the...Ch. 20.1 - Prob. 1NPCh. 20.2 - List the types of normal biota presently known to...Ch. 20.2 - Describe how our view has changed of normal biota...Ch. 20.3 - List the possible causative agents, modes of...Ch. 20.3 - Prob. 6AYPCh. 20.3 - Prob. 7AYPCh. 20.3 - Identify the most important features of mumps,...Ch. 20.3 - Differentiate among the main types of hepatitis,...
Ch. 20.3 - Prob. 1MMCh. 20.3 - Prob. 2NPCh. 20.3 - Prob. 3NPCh. 20.3 - Q. Why are the effects of jaundice so widespread...Ch. 20.3 - Prob. 4NPCh. 20.4 - Prob. 10AYPCh. 20.4 - Prob. 11AYPCh. 20.4 - Prob. 12AYPCh. 20.4 - Prob. 5NPCh. 20 - Prob. 1QCh. 20 - Healthy teeth are important for good nutrition and...Ch. 20 - Prob. 3QCh. 20 - Prob. 4QCh. 20 - Why is heating food contaminated with...Ch. 20 - Prob. 6QCh. 20 - Prob. 7QCh. 20 - Prob. 8QCh. 20 - Prob. 9QCh. 20 - Prob. 10QCh. 20 - Why is it thought that the Shiga toxin in...Ch. 20 - Prob. 12QCh. 20 - Prob. 13QCh. 20 - Prob. 14QCh. 20 - Prob. 15QCh. 20 - Prob. 16QCh. 20 - Describe the populations that are most at risk for...Ch. 20 - Prob. 18QCh. 20 - Prob. 19QCh. 20 - Prob. 20QCh. 20 - Prob. 21QCh. 20 - From chapter 11, figure 11.2a. Imagine for a...
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