Foundations in Microbiology
10th Edition
ISBN: 9781259705212
Author: Kathleen Park Talaro, Barry Chess Instructor
Publisher: McGraw-Hill Education
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Chapter 20.L2, Problem 1CT
What is the logic behind testing for E. coli to detect fecal contamination of water?
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What is the logic behind testing for E. coli to detect fecalcontamination of water?
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Chapter 20 Solutions
Foundations in Microbiology
Ch. 20.1 - Explain the effect of the virulence factor common...Ch. 20.1 - Identify those people most at risk of developing a...Ch. 20.1 - Briefly describe the human infections caused by...Ch. 20.1 - How can antibiotic treatment of a gram-negative...Ch. 20.2 - Name the genera of bacteria that are...Ch. 20.2 - Outline the pathology and epidemiology of...Ch. 20.2 - Explain the epidemiology of Francisella tularensis...Ch. 20.2 - Prob. 6ELOCh. 20.2 - Prob. 7ELOCh. 20.2 - Prob. 8ELO
Ch. 20.2 - List the four genera of bacteria that cause...Ch. 20.2 - Prob. 4CYPCh. 20.2 - Prob. 5CYPCh. 20.2 - Prob. 6CYPCh. 20.2 - What is unusual about the reservoir of Legionella?...Ch. 20.3 - Recall the medically important members of the...Ch. 20.3 - Prob. 10ELOCh. 20.3 - Explain the importance of the three major surface...Ch. 20.3 - Name the key characteristics shared by the...Ch. 20.3 - Explain what is meant by IMViC.Ch. 20.3 - Prob. 10CYPCh. 20.3 - Prob. 11CYPCh. 20.3 - Briefly describe the methods used to isolate and...Ch. 20.3 - Prob. 13CYPCh. 20.4 - Differentiate among the major enteric pathologies...Ch. 20.4 - Explain the role of E. coli in infantile and...Ch. 20.4 - Prob. 14ELOCh. 20.4 - Prob. 15ELOCh. 20.4 - Prob. 14CYPCh. 20.4 - Prob. 15CYPCh. 20.4 - Justify treating E. coli Ol57:H7 differently from...Ch. 20.4 - Prob. 17CYPCh. 20.4 - Prob. 18CYPCh. 20.5 - Differentiate between true noncoliform enteric...Ch. 20.5 - Distinguish the pathologies of typhoidal and...Ch. 20.5 - Identify the possible sources of Shigella...Ch. 20.5 - Prob. 19ELOCh. 20.5 - Prob. 20ELOCh. 20.5 - Prob. 19CYPCh. 20.5 - Prob. 20CYPCh. 20.5 - Make a comparison chart for Shigella and...Ch. 20.5 - What are the Five F’s and how do they relate to...Ch. 20.5 - Prob. 23CYPCh. 20.5 - Which body systems are commonly infected by...Ch. 20.5 - Describe the epidemiology and pathology of...Ch. 20.L1 - A unique characteristic of many isolates of...Ch. 20.L1 - Prob. 2MCQCh. 20.L1 - Prob. 3MCQCh. 20.L1 - A classic symptom of pertussis is a. labored...Ch. 20.L1 - Prob. 5MCQCh. 20.L1 - Prob. 6MCQCh. 20.L1 - Prob. 7MCQCh. 20.L1 - Which of the following is a major difference...Ch. 20.L1 - A complication/complications of typhoid fever...Ch. 20.L1 - Prob. 10MCQCh. 20.L1 - Prob. 11MCQCh. 20.L1 - Haemophilus influnzae is ____________ and requires...Ch. 20.L1 - Prob. 13MCQCh. 20.L1 - Prob. 14MCQCh. 20.L1 - Single Matching. Match the infectious agent with...Ch. 20.L1 - Prob. 1CSRCh. 20.L1 - Prob. 2CSRCh. 20.L1 - Prob. 3CSRCh. 20.L1 - Prob. 1WCCh. 20.L1 - What are unique features in the epidemiology of E....Ch. 20.L1 - Explain several practices an individual can use to...Ch. 20.L1 - Prob. 4WCCh. 20.L1 - Briefly outline the zoonotic infections in this...Ch. 20.L2 - What is the logic behind testing for E. coli to...Ch. 20.L2 - Identify the genera with the following...Ch. 20.L2 - Given that so many infections arc caused by...Ch. 20.L2 - Prob. 4CTCh. 20.L2 - Students in our classes sometimes ask how it is...Ch. 20.L2 - Explain lhe reasons for an increase in numbers of...Ch. 20.L2 - Compare and contrast the pathology, diagnosis, and...Ch. 20.L2 - Prob. 8CTCh. 20.L2 - Prob. 9CTCh. 20.L2 - Prob. 10CTCh. 20.L2 - "There is no circumstance [in which] you can cook...Ch. 20.L2 - Use figure 20.5 a, b as a reference guideline for...
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- 5) Aseptic technique refers to A) the microbial inoculum placed into a test tube or onto a Petri plate. B) a series of practices to avoid contamination. C) the autoclave and other sterilizing procedures. D) cleanliness in the laboratory.arrow_forwardWhy do we test water for coliforms if they are not considered pathogenic?arrow_forwardWhy can EMB agar be used to detect the presence of E. coli in particular? Explain the principle of detection of the organism using EMB agararrow_forward
- A stool specimen of a patient with severe diarrhea was cultured in a series of specialized media for isolation of enteric organisms. The cultures yielded three isolates that were species of Salmonella, Shigella, and Escherichia. Explain why the Hydrogen sulfide production test would be diagnostically significant.arrow_forward1) What are all of the different colony types that can be seen on a mixed-culture streak plate? 2) What kinds of colonies can be seen when mixed cultures of E. coli, M. luteus, and Serratia marcesens? 3) What is the range of colonies that may be seen with each mixed culture?arrow_forwardIf coliforms were present on a plated sample, would you know with certainty that the coliforms are disease-causing? Why or why not?arrow_forward
- Transparent double-sided dishes used for growing microbes are most commonly called A) Petri dishes. B) baker dishes. C) sterilization plates. D) culture medium plates.arrow_forwardyou are given a mixed culture of s. aureus, E. coli and P. aeruginosa. how would you isolate each other from this mixed culture?( Besides using plate technique)arrow_forwardKoch's postulates include all of the following EXCEPT O 1) Isolate the organism in pure culture. The symptoms of the test animal may vary from the symptoms seen in the O 2) patient. O 3) Inoculate a test animal with the isolated organism. 4) The organism must be isolated from the test animal in pure culture. 5) The organism isolated from the test animal must match the organism isolated from the patient.arrow_forward
- a) explain in your own words how to do a nitrate reduction test to identify unknown bacteria b) explain in your own words how to perform a phenol red broth (prb) test to help identify unknown bacteriaarrow_forwardIf the concentration of E. coli in a broth is between 104 and 106 cells per mL, the best way determine the precise number of living cells in the sample, would be toa) use a counting chamber.b) plate out an appropriate dilution of the sample on nutrient agar.c) determine cell number by using a spectrophotometer.d) Any of these three methods would be satisfactory.e) None of these three methods would be satisfactory.arrow_forwardE. coli O157:H7 is an organism of concern in contaminated foods. How can the use of MacConkey agar and Sorbitol-MacConkey agar be used to screen for E. coli bacteria in general and E. coli O157:H7 in particular?arrow_forward
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