Microbiology With Diseases By Taxonomy (6th Edition)
6th Edition
ISBN: 9780134832302
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 20, Problem 2TMW
Summary Introduction
To determine:
The reason for the higher resistance to antimicrobial agents in hospital acquired infections than in community based infections.
Concept introduction:
Hospital acquired infections can occur during the treatment of a patients in the hospital for some other disease or even after discharge. They can spread through commonly used disinfectants or even devices like ventilators. These types of infections mostly occur in individuals with compromised immunity, they target the urinary tract, blood, and wounds.
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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)
14) When considering virulence factors, which class of virulence factor would be most likely to increase the severity of
disease caused by the pathogen possessing the virulence factor, due to this class of virulence factor most likely causing
the death of cells?
A) extracellular enzymes
C) anti-phagocytic factors
B) toxins
D) adherence factors
15) Which of the following classes of virulence factor is absolutely needed for nearly every infection? In fact, if the
organism lacks this factor, it is most likely going to be avirulent (not disease-causing).
A) extracellular enzyme
B) adherence factor
D) anti-phagocytic factor
C) exotoxin
16) Which of the following is an iron-binding protein produced by pathogens to access the body's store of iron?
A) ferritin
B) siderophores
C) hemolysin
D) transferrin
17) The complement cascade and its by-products contribute to
A) attracting phagocytes to sites of infection.
B) triggering release of interferons.
C) triggering inflammation.
D) triggering…
Which of the following virulence factors among A-D is correctly matched with its definition or characterization?
A) O Invasins: pathogen proteins that prevent opsonization of the pathogen
B) O Phase variation: allows pathogen to switch between different forms of an extracellular antigen (e.g., flagellum)
C) O Protein A. a microbial factor that allows for attachment, typically a surface protein or surface glycoprotein
D) O Prevention of lysosome:phagosome fusion mechanism employed by an extracellular pathogen
E) OM protein, Opa protein: enzymes that interfere with the functioning of antibodies
Chapter 20 Solutions
Microbiology With Diseases By Taxonomy (6th Edition)
Ch. 20 - Neisseria gonorrhoeae can be deposited in the...Ch. 20 - Prob. 2TMWCh. 20 - Prob. 3TMWCh. 20 - Prob. 4TMWCh. 20 - A 20-year-old male reports to his physician that...Ch. 20 - Prob. 3CCSCh. 20 - In a single day, two 19-year-old women and one...Ch. 20 - The presence of lipid A in the outer membranes of...Ch. 20 - Prob. 2MCCh. 20 - Prob. 3MC
Ch. 20 - Prob. 4MCCh. 20 - Prob. 5MCCh. 20 - Prob. 6MCCh. 20 - Prob. 7MCCh. 20 - Prob. 9MCCh. 20 - Which bacterium causes infections in many burn...Ch. 20 - Prob. 11MCCh. 20 - Prob. 12MCCh. 20 - Prob. 1MCh. 20 - Prob. 2VICh. 20 - Prob. 1SACh. 20 - Prob. 2SACh. 20 - Why do nurses place antimicrobial agents in babies...Ch. 20 - Prob. 4SACh. 20 - Prob. 5SACh. 20 - Prob. 6SACh. 20 - Given that pseudomonads are present in almost...Ch. 20 - Prob. 8SACh. 20 - Prob. 9SACh. 20 - Prob. 10SACh. 20 - Prob. 11SACh. 20 - Prob. 12SACh. 20 - Describe transovarian transmission of a pathogen.Ch. 20 - A three-year-old boy complains to his day care...Ch. 20 - Prob. 2CTCh. 20 - In one summer month, local physicians reported 11...Ch. 20 - Prob. 4CTCh. 20 - Prob. 5CTCh. 20 - A hunter reports to his physician that he has been...Ch. 20 - Ear piercings resulted in a rash of infections in...Ch. 20 - A 21-month-old child was admitted to the hospital...Ch. 20 - Prob. 9CTCh. 20 - Prob. 10CTCh. 20 - Prob. 11CTCh. 20 - Prob. 12CT
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