Foundations in Microbiology
10th Edition
ISBN: 9781259705212
Author: Kathleen Park Talaro, Barry Chess Instructor
Publisher: McGraw-Hill Education
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Question
Chapter 21.L2, Problem 5CT
Summary Introduction
To determine:
The relationship between vector and microbial agents in the cases where humans are accidental host.
Introduction:
In several diseases caused in humans, they are a result of accidental attack by the vector. Human have known to be accidental host for vectors in many diseases; for example, relapsing fever.
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Explain the process of Quorum Sensing in coordinating the production of virulence factors in a host.
Below are a list of virulence factors/ strategies paired with an example of an organism that utilizes them. How do each of the following strategies contribute to the virulence of the pathogen?
Strategy - Causes the host to produce more receptors (Organism - Rhinovirus)
Strategy - Produces gas as a product of fermentation (Organism - Clostridium perfringens)
Strategy - Produces a capsule (organism - Klebsiella pneumonia)
Strategy - Ability to move between adjacent cells (organism - Cytomegalovirus)
Strategy - Ability to use pilus as a motility structure (organism - Pseudomonas aerogenosa)
Select all of the following that applies to the tradeoff between transmission and virulence that applies to many diseases.
a) The tradeoff between transmission and virulence means that diseases always evolve to become more virulent.
b) If greater virulence limits transmission, that disease will likely evolve to become less virulent than it could be.
c) While making more copies of itself can increase the likelihood of transmission occurring, too much replication of the disease can make the host so sick it won't leave the house and spread the disease.
d) A strain of a disease that replicates enough to be transmitted, but not so much that the host gets too sick to move, will be favored by natural selection over strains that either make the host too sick or do not replicate enough to be transmitted.
e) If a disease can spread without making its host sick (e.g. when the host is asymptomatic), then the tradeoff between transmission and virulence…
Chapter 21 Solutions
Foundations in Microbiology
Ch. 21.1 - Differentiate among the different stages of...Ch. 21.1 - Prob. 2ELOCh. 21.1 - List the nonsyphilitic treponematoses.Ch. 21.1 - Prob. 4ELOCh. 21.1 - Identify the vectors and behaviors associated with...Ch. 21.1 - Construct a table comparing the symptoms of...Ch. 21.1 - Prob. 2CYPCh. 21.1 - Besides syphilis, what other diseases are caused...Ch. 21.1 - List several behaviors that would put one at risk...Ch. 21.2 - Relate the physical characteristics seen in the...
Ch. 21.2 - Understand the pathogenesis of cholera.Ch. 21.2 - Name the usual source of infection for each genus...Ch. 21.2 - Prob. 9ELOCh. 21.2 - How could one differentiate the genera Vibrio,...Ch. 21.2 - Prob. 6CYPCh. 21.2 - Which two species of curviform bacteria are...Ch. 21.2 - Briefly describe the nature of food infection in...Ch. 21.2 - Prob. 9CYPCh. 21.3 - Prob. 10ELOCh. 21.3 - Understand the epidemiology and pathology of Rocky...Ch. 21.3 - Prob. 12ELOCh. 21.3 - Prob. 13ELOCh. 21.3 - Prob. 14ELOCh. 21.3 - Recall the names and characteristics of diseases...Ch. 21.3 - What do rickettsias and chlamydias derive from the...Ch. 21.3 - Provide an example of a species, vector, and...Ch. 21.3 - Prob. 12CYPCh. 21.3 - Prob. 13CYPCh. 21.3 - Prob. 14CYPCh. 21.3 - Prob. 15CYPCh. 21.3 - Prob. 16CYPCh. 21.3 - Prob. 17CYPCh. 21.4 - Describe the characteristics and diseases of...Ch. 21.4 - Describe how L forms may arise.Ch. 21.4 - Prob. 18CYPCh. 21.4 - Prob. 19CYPCh. 21.4 - Which body systems are affected by mycoplasma...Ch. 21.4 - Explain why penicillin therapy may result in the...Ch. 21.5 - Discuss the formation of plaque on tooth surfaces.Ch. 21.5 - Relate the formation of plaque to periodontitis.Ch. 21.5 - Prob. 22CYPCh. 21.5 - Prob. 23CYPCh. 21.5 - Prob. 24CYPCh. 21.5 - Prob. 25CYPCh. 21.L1 - Prob. 1MCQCh. 21.L1 - Prob. 2MCQCh. 21.L1 - Prob. 3MCQCh. 21.L1 - Prob. 4MCQCh. 21.L1 - Prob. 5MCQCh. 21.L1 - Prob. 6MCQCh. 21.L1 - Relapsing fever is spread by a. lice b. ticks c....Ch. 21.L1 - Prob. 8MCQCh. 21.L1 - Prob. 9MCQCh. 21.L1 - Prob. 10MCQCh. 21.L1 - Prob. 11MCQCh. 21.L1 - Prob. 12MCQCh. 21.L1 - Prob. 13MCQCh. 21.L1 - Prob. 14MCQCh. 21.L1 - Mycoplasmas attack the ____ of host cells. a....Ch. 21.L1 - Prob. 16MCQCh. 21.L1 - Prob. 17MCQCh. 21.L1 - Prob. 18MCQCh. 21.L1 - Prob. 19MCQCh. 21.L1 - Prob. 20MCQCh. 21.L1 - Prob. 1CSRCh. 21.L1 - What other risk factors could have alerted...Ch. 21.L1 - What characteristics of Coxiella are important...Ch. 21.L1 - Prob. 1WCCh. 21.L1 - Prob. 2WCCh. 21.L1 - a. In what ways are dental diseases mixed...Ch. 21.L1 - a. Which diseases in this chapter are zoonoses? b....Ch. 21.L2 - a. Why does syphilis have such profound effects on...Ch. 21.L2 - a. In view of the fact that cholera causes the...Ch. 21.L2 - Prob. 3CTCh. 21.L2 - Prob. 4CTCh. 21.L2 - Prob. 5CTCh. 21.L2 - Prob. 6CTCh. 21.L2 - Prob. 7CTCh. 21.L2 - Which two infectious agents covered in this...Ch. 21.L2 - a. In what way is the oral cavity an ecological...Ch. 21.L2 - Prob. 10CTCh. 21.L2 - Prob. 11CTCh. 21.L2 - Prob. 12CTCh. 21.L2 - Prob. 1VC
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