NESTER'S MICROBIOLOGY
9th Edition
ISBN: 9781260807363
Author: Anderson
Publisher: MCG
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Textbook Question
Chapter 16, Problem 6SA
Describe two mechanisms that bacteria use to invade via mucous membranes.
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Chapter 16 Solutions
NESTER'S MICROBIOLOGY
Ch. 16 -
1. Describe three types of symbiotic...Ch. 16 -
2. Describe two situations that can lead to...Ch. 16 -
3. How are acute, chronic, and latent infections...Ch. 16 - Prob. 4SACh. 16 - Describe the four general mechanisms by which...Ch. 16 - Describe two mechanisms that bacteria use to...Ch. 16 - Explain how a capsule can allow an organism to be...Ch. 16 - Prob. 8SACh. 16 -
9. Describe two mechanisms a virus might use to...Ch. 16 -
10. How do Schistosoma species avoid antibodies?
Ch. 16 - Prob. 1MCCh. 16 - Prob. 2MCCh. 16 - The C5a peptidase enzyme of Streptococcus pyogenes...Ch. 16 - Prob. 4MCCh. 16 - Prob. 5MCCh. 16 - Prob. 6MCCh. 16 - Prob. 7MCCh. 16 - Prob. 8MCCh. 16 - Prob. 9MCCh. 16 -
10. Which of the following statements about...Ch. 16 - A group of smokers suffering from Staphylococcus...Ch. 16 - Prob. 2ACh. 16 - Prob. 1CTCh. 16 - Prob. 2CT
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- Bacteria of the genus Mycoplasma are distinguished from other bacterial cells by 1) cell walls composed solely of amino acids. O 2) the absence of a cytoplasmic membrane. O 3) the absence of a cell wall. O 4) Have large capsules. 5) the presence of mycolic acid in their cell walls.arrow_forwardAbout becterial enzymes, it is CORRECT to affirm that: a). Some becterial enzymes can help the microbe fight the immune system, by destroying lgA.b). Coagulases are enzymes that use the host's fibrinogen and form a semi-solid get that isolates amd protects the bacteria.c). Some bacterial enzymes such as hyaluronidase can help the microble move through the host's tissus by destroying the tissue's components.d). Fibrolysin is an enzymes that can help from blood clots.arrow_forwardExplain the role of pylori in the pathogenesis of peptic ulcers. Which populations are most susceptible to peptic ulcers? Is H. pylori normal flora? If so, what causes the species to become pathogenic? Construct at table to compare and contrast the 5 steps of microbial pathogenesis. How does extracellular growth differ from intracellular growth? Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram. (2 points) Explain the pathogenesis of Listeria monocytogenes. Be sure to include temperature regulation, intracellular growth, and at risk groups in your discussion.arrow_forward
- Which statement about Yersinia pestis is false?a) Conditions inside human phagocytes activate virulence genes.b) The bacterium can form biofilms in the flea digestive system.c) Yops protein increases phagocytosis.d) The organism resembles a safety pin in certain stained preparations.e) It was responsible for the “black death” in Europe during the 1300s.arrow_forwardMycobacterium tuberculosis is very difficult to stain because of the A) presence of ribosomes in the cytoplasm. B) location of the DNA within the cell. C) large amounts of a waxlike lipids present in its cell wall. D) lack of a cell wall.arrow_forwardDescribe several specific adhesins by which bacterial pathogens attach to host cellsarrow_forward
- Pathogenic infections induce damage to the host by a variety of mechanisms. While many mechanisms are direct effects of the pathogen, some damaging mechanisms result from the immune response to the infection. Examples of damage caused by the host immune response are: a) Exotoxin production, endotoxin b) Cell-mediated inmunity, direct cytopathic effect c) Endotoxin, inmmunune complexes d) Direct cythopathic effect, endotoxin e) Cell-mediated inmunity, inmmunune complexesarrow_forwardDescribe three common characteristics of pathogenic mycobacteria.arrow_forwardCampylobacter is an extracellular intestinal species that is a true pathogen. Which of the following specifically occur during the establishment and outgrowth stage (step 3) of the bacterial pathogenic process for this species? Tissue destruction to increase nutrient concentrations Production of exotoxins to decrease normal flora populationsarrow_forward
- Why does Helicobacter pylori cause ulceractions in the lining of the Stomach? 1)The microbes secrete a toxin that prevents the host from detecting invasion of the microbe and thus allows it to thrive in the stomach and damage the host cells. 2)After invasion of the microbe in the cells lining the stomach, they are no longer able to produce mucous to protect the host cells from acid erosion 3)The microbe produces an enzyme that causes the cell to produce potent digestive enzymes that erode the stomach lining. 4)Once the microbe has entered the stomach, it releases digestive enzymes that degrade the mucous secreting cells.arrow_forwardWhich of the following is a consideration in treating bacterial infections A) Bacteriostatic b) bactericidal c) broad spectrumarrow_forwardWhen a child skins their knee and neosporin is applied, this reduces the chances of pathogens gaining entry to the body by A.) adhesion to receptor proteins. B.) endocytosis. C.) use of a biofilm. D.) the parenteral route.arrow_forward
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