EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Chapter 19, Problem 3SA
Considering that Pseudomonas aeruginosa and Staphylococcus epidermidis are ubiquitous and that each possesses numerous virulence factors, why do they rarely cause disease?
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Propionibacterium acnes is a normal member of the skin microbiome that benefits the body by lowering the skin's pH- an antimicrobial effect. However, P. acnes is also the leading cause of acne. Explain mechanistically how can a bacterium be part of the normal microbiome and beneficial but also be pathogenic?
Different strains of Streptococcus pyogenes have different virulence factors, giving these microbes much versatility. Virulence factors include which of the following? Choose one or more:
A.A capsule that, when thick, will help the organism avoid phagocytosis by macrophages
B.A cell wall containing lipoteichoic acid, thought to facilitate adherence to pharyngeal epithelial cells
C.Enzymes that lyse blood cells (streptolysins)
D.The production of several endotoxins called streptococcal pyogenic endotoxins (SPEs)
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…
Chapter 19 Solutions
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
Ch. 19 - Prob. 1TMWCh. 19 - Prob. 2TMWCh. 19 - Buruli Ulcer Jacques liked living in the...Ch. 19 - A New Cause of Spots Fifty-two-year-old David has...Ch. 19 - Prob. 3TMWCh. 19 - A Painful Rash A mother brings her three-year-old...Ch. 19 - A Child with Warts Ten-year-old Rudy has several...Ch. 19 - Grandfathers Shingles The Davises were excited...Ch. 19 - Prob. 4TMWCh. 19 - Prob. 4CCS
Ch. 19 - Prob. 5TMWCh. 19 - Diagnosis in the Desert In the 1970s,...Ch. 19 - Prob. 6TMWCh. 19 - Prob. 3EDCSCh. 19 - The epidermis ____. a. has an intricate network of...Ch. 19 - Prob. 2MCCh. 19 - Prob. 3MCCh. 19 - Prob. 4MCCh. 19 - Prob. 5MCCh. 19 - Prob. 6MCCh. 19 - Prob. 7MCCh. 19 - Prob. 8MCCh. 19 - Prob. 9MCCh. 19 - Prob. 10MCCh. 19 - Prob. 11MCCh. 19 - Prob. 12MCCh. 19 - Prob. 13MCCh. 19 - Prob. 14MCCh. 19 - Prob. 15MCCh. 19 - Prob. 1MCh. 19 - Prob. 1FIBCh. 19 - Prob. 2FIBCh. 19 - Prob. 3FIBCh. 19 - Prob. 4FIBCh. 19 - Prob. 5FIBCh. 19 - Prob. 6FIBCh. 19 - Prob. 7FIBCh. 19 - Prob. 8FIBCh. 19 - Prob. 9FIBCh. 19 - Most pimples result from infection by ______ not...Ch. 19 - Prob. 1MTFCh. 19 - Prob. 2MTFCh. 19 - Prob. 3MTFCh. 19 - Prob. 4MTFCh. 19 - Prob. 5MTFCh. 19 - Prob. 1SACh. 19 - Prob. 2SACh. 19 - Considering that Pseudomonas aeruginosa and...Ch. 19 - Prob. 4SACh. 19 - Prob. 5SACh. 19 - Describe four enzymes produced by Staphylococcus,...Ch. 19 - Prob. 7SACh. 19 - Prob. 8SACh. 19 - Prob. 9SACh. 19 - Prob. 10SACh. 19 - Label each lesion seen in poxvirus infections.Ch. 19 - Prob. 2VICh. 19 - Prob. 3VICh. 19 - Prob. 1CTCh. 19 - Why is it more difficult to rid a community of a...Ch. 19 - Prob. 3CTCh. 19 - Prob. 4CTCh. 19 - Prob. 5CTCh. 19 - Most DNA viruses replicate within the nucleus of a...Ch. 19 - Prob. 7CTCh. 19 - Prob. 8CTCh. 19 - Prob. 9CTCh. 19 - Prob. 10CTCh. 19 - Prob. 11CTCh. 19 - Why do impetigo and erysipelas occur more commonly...Ch. 19 - Prob. 13CTCh. 19 - Prob. 14CTCh. 19 - Prob. 1CM
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is NOT true of bacterial exotoxins? 1. Important in the pathogenesis of many human diseases 2. Their toxic effect can be systemic, affecting cells distant from the primary site of infection 3. None of the other four answers (All are true of bacterial exotoxins) 4. Different exotoxins may affect different types of cells (e.g., nerves, gastrointestinal mucosa) 5. Some exotoxins have two components, A (active) and B (binding)arrow_forwardWhat does the term nosocomial infection mean? What is the difference between an endogenous nosocomial infection and exogenous nosocomial infection? Describe the various infections produced by Pseudomonas aeruginosa .arrow_forwardOur environment contains masses of microorganisms, many of which reside as commensal organisms on our body’s mucosal and epithelial surfaces without causing disease. What two features distinguish a pathogenic microbe from these commensal microbes?arrow_forward
- Your father, age 74, has been recovering in a rehabilitation center from a hip fracture. He has developed C. diff and is in isolation. Explain the process of how this disease occurs. What preventive measures need to be taken to prevent the spread of this condition?arrow_forwardWhy do mycoplasmas need to have stronger cytoplasmicmembranes than other bacteria?arrow_forwardConsidering that Staphylococcus epidermidis does not typically cause disease in a healthy person, why would it be significant if it carries an R plasmid?arrow_forward
- Explain how the body (including cells, organs, organ systems) is affected by the bacterium called Neisseria meningitidis? Are there any long-term effects caused by the bacterium, even after recovery?arrow_forwardAll of the following are true of Lyme disease excepta) it is caused by a spirochete.b) it is transmitted by certain species of ticks.c) it occurs only in the region around Lyme, Connecticut.d) most cases get a rash that looks like a target.e) it can cause heart and nervous system damage.arrow_forwardAll of the following are true of Rocky Mountain spotted fever excepta) the disease is most prevalent in the western United States.b) it is caused by an obligate intracellular bacterium.c) it is a zoonosis transmitted to humans by ticks.d) those with the disease characteristically develop a hemorrhagic rash.e) antibiotic therapy is usually curative if given early in the disease.arrow_forward
- All the following would be of benefit to extracellular pathogens, except A) O the presence of a capsule B) O ability to prevent the fusion of a phagosome and lysosome C) O ability to prevent of opsonization D) O ability to alter cell surface proteins via phase variation E) O There are no exceptions; all are of benefit to extracellular pathogens.arrow_forwardWhich 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 antibodiesarrow_forwardWhich of the following about Staphylococcus aureus is false?a) It is generally coagulase-positive.b) Its infectious dose is increased in the presence of foreign material.c) Some strains infecting wounds can cause toxic shock.d) Nasal carriers have an increased the risk of surgical wound infection.e) It is pyogenic.arrow_forward
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