Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 43.1, Problem 3CC
Summary Introduction
Microorganisms whose occurrence in water specifies the presence of pathogens are called indicator organisms. These microorganisms are non-pathogenic and are usually present in contaminated water. These can be noticed even at low concentrations. One of the most widely used indicator organism is Escherichia coli. It is important to note that indicator organisms are not necessarily pathogenic, but it can be toxic when consumed at a high level.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A microbiologist inoculates a growth medium with 100 bacterial cells/ml. If the
generation time of the species is 1 hour, and the microbes are in the exponential (log)
phase of growth, how many hours require for the culture to surpass 10,000 cells/ml,
if the culture is checked once each hour?
O 1) 2 hours
O 2) 7 hours
O 3) 3 hours
O 4) 10 hours
O 5) 24 hours
What is the difference between a mixed culture and a contaminated culture if they both contain more than one type of organism ?
Another method of microbial control is filtration. List down at least 5 kinds of filters which could be used for this method?
Chapter 43 Solutions
Prescott's Microbiology
Ch. 43.1 - MICRO INQUIRY What is the difference between...Ch. 43.1 - Prob. 1CCCh. 43.1 - Prob. 2CCCh. 43.1 - Prob. 3CCCh. 43.1 - Prob. 4CCCh. 43.2 - Prob. 1MICh. 43.2 - Prob. 2MICh. 43.2 - Explain how primary, secondary, and tertiary...Ch. 43.2 - Prob. 1.2CCCh. 43.2 - Prob. 1.3CC
Ch. 43.2 - Prob. 1.4CCCh. 43.2 - Prob. 1.5CCCh. 43.2 - Prob. 3MICh. 43.2 - Prob. 2.1CCCh. 43.2 - Prob. 2.2CCCh. 43.2 - Prob. 2.3CCCh. 43.3 - Why must the membrane between the two chambers be...Ch. 43.3 - Prob. 1CCCh. 43.3 - Prob. 2CCCh. 43.3 - How might microbial fuel cells be involved in...Ch. 43.4 - Why does dehalogenation increase the likelihood...Ch. 43.4 - Prob. 1CCCh. 43.4 - Explain the two mechanisms of reductive...Ch. 43.4 - Prob. 3CCCh. 43.4 - What components are commonly added to microbes...Ch. 43.4 - Prob. 5CCCh. 43 - Prob. 1RCCh. 43 - Prob. 2RCCh. 43 - Prob. 3RCCh. 43 - Prob. 4RCCh. 43 - Prob. 5RCCh. 43 - Prob. 6RCCh. 43 - You wish to build a house in a rural community...Ch. 43 - Prob. 2ALCh. 43 - Prob. 3ALCh. 43 - Prob. 4AL
Knowledge Booster
Learn more about
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
- Listen Which of the following regarding controlling microbial growth is true? a) Microbial death rate increases with an increase in temperature b) The more microbes present, the shorter amount of time it will take to kill the population E c) Gram-positive bacteria tend to be more resistant to chemicals than gram- negative bacteria d) Microbial death rate increases as pH approaches 7 (neutral) Previous Page Submit Quiz $ R Next Page 5 of 10 questions saved % H K Page 4 of 10arrow_forwardpropose a hypothesis regarding the organisms (staphylococcus, escherichia, pseudomonas, and bacillus) that will be resistant to the most disinfectants, and why? if the hypothesis is supported, what specific experimental results will be observed? what would be the independent and dependent variable? zone size, disinfectant type, colony countarrow_forwardAfter streaking microbial culture on agar plates and observing colonial growth, TMTC usually happens. What are the causes of TMTC plates (plates with more than 300 colonies that cannot be counted)? What are the ways to prevent this from happening?arrow_forward
- Why is water tested for coliform bacteria rather than for pathogenic bacteria which may be present?arrow_forwardWhy do we test water for coliforms if they are not considered pathogenic?arrow_forwardA broth culture is initially inoculated with a single bacterial cell. For the first hour the bacteria has a generation time of 30 minutes, for the second hour the generation time has been reduced to 15 minutes, and for the third hour the generation time has been reduced to 10 minutes. At the end of the third hour how many bacteria are present in the broth culture?arrow_forward
- List and define five terms used to express a microbe’s optimal growth temperaturearrow_forwardIn microbiology, the term growth in a culture usually refers to an increase in O 1) the number and size of microbial cells. O 2) the amount of ATP consumed. O 3) a microbe's size. O 4) the number of microbial cells. 5) the amount of ATP produced.arrow_forwardWhat is the answer of microbial load in the culture?arrow_forward
- Describe the five phases of a microbial growth curve observed when microbes are grown in a batch culturearrow_forwardIt is sometimes difficult to obtain pure cultures of microbes that grow naturally in mixed communities. True or False ?arrow_forwardIs the mannitol salt agar (MSA) a complex or defined medium? Explain based on Composition. What kind of media based on what kind of microorganisms it allows to growarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education