Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 7.8, Problem 1RIA
Briefly describe each technique by which microbial population numbers may be determined and give its advantages and disadvantages.
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A. What is one example of a “direct” method of counting a microbial population?
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Name and discuss the advantages and disadvantages of at least five different bio-indicators which are used for the detection of environmental pollution in contaminated sites.
Chapter 7 Solutions
Prescott's Microbiology
Ch. 7.1 - MICRO INQUIRY In addition to chromosomes, what...Ch. 7.2 - MICRO INQUIRY Why is it important that the origin...Ch. 7.2 - MICRO INQUIRY What would be the outcome if FtsZ...Ch. 7.2 - MICRO INQUIRY Which step in the development of...Ch. 7.2 - Retrieve, Infer, Apply 1. Describe the three...Ch. 7.2 - Retrieve, Infer, Apply 2. How does the bacterial...Ch. 7.2 - Retrieve, Infer, Apply 3. Do you think MinCDE...Ch. 7.2 - Retrieve, Infer, Apply 4. Do you think Spiroplasma...Ch. 7.3 - What elements of the Sulfolobus spp. cell cycle...Ch. 7.3 - Many archaea have genes encoding an FtsZ...
Ch. 7.4 - What is the difference between halophilic and...Ch. 7.4 - Why do facultative anaerobes grow best at the...Ch. 7.4 - Retrieve, Infer, Apply 1. How do microorganisms...Ch. 7.4 - Retrieve, Infer, Apply 2. Define water activity...Ch. 7.4 - What are halophiles and why do Halobacterium spp....Ch. 7.4 - Retrieve, Infer, Apply 1. Define pH, acidophile,...Ch. 7.4 - Retrieve, Infer, Apply Classify each of the...Ch. 7.4 - Retrieve, Infer, Apply 3. Describe the mechanisms...Ch. 7.4 - Retrieve, Infer, Apply 1. What are cardinal...Ch. 7.4 - Prob. 3.2RIACh. 7.4 - Define psychrophile, psychrotolerant, mesophile,...Ch. 7.4 - Retrieve, Infer, Apply What metabolic and...Ch. 7.4 - Retrieve, Infer, Apply Describe the five types of...Ch. 7.4 - Retrieve, Infer, Apply What are the toxic effects...Ch. 7.4 - Retrieve, Infer, Apply Where would you expect to...Ch. 7.4 - Retrieve, Infer, Apply List the types of...Ch. 7.4 - Prob. 5.3RIACh. 7.4 - Prob. 5.4RIACh. 7.5 - MICRO INQUIRY What biomolecules make up the...Ch. 7.5 - Prob. 1RIACh. 7.5 - Prob. 2RIACh. 7.5 - Retrieve, Infer, Apply What is quorum sensing?...Ch. 7.5 - Retrieve, Infer, Apply How is the communication...Ch. 7.6 - Prob. 1RIACh. 7.6 - What are peptones, yeast extract, beef extract,...Ch. 7.6 - Retrieve, Infer, Apply Describe four ways in which...Ch. 7.6 - What are pure cultures and why are they important?...Ch. 7.6 - Retrieve, Infer, Apply It is known that microbial...Ch. 7.6 - Retrieve, Infer, Apply How might an enrichment...Ch. 7.7 - MICRO INQUIRY Identify the regions of the growth...Ch. 7.7 - Retrieve, Infer, Apply Define microbial growth.Ch. 7.7 - Retrieve, Infer, Apply Describe the phases of the...Ch. 7.7 - Why would cells that are vigorously growing when...Ch. 7.7 - Retrieve, Infer, Apply Contrast and compare the...Ch. 7.7 - Calculate the growth rate constant and generation...Ch. 7.7 - Suppose the generation time of a bacterium is 90...Ch. 7.8 - Why is it important to have no more than about 250...Ch. 7.8 - Briefly describe each technique by which microbial...Ch. 7.8 - Prob. 2RIACh. 7.8 - Prob. 3RIACh. 7.8 - For each of the following, which enumeration...Ch. 7.9 - Prob. 1MICh. 7.9 - Prob. 1RIACh. 7.9 - Prob. 2RIACh. 7.9 - Prob. 3RIACh. 7 - As an alternative to diffusible signals, suggest...Ch. 7 - If you wished to obtain a pure culture of bacteria...Ch. 7 - Design an experiment to determine if a...Ch. 7 - Suggest one specific mechanism underlying the...Ch. 7 - Consider cell-cell communication: bacteria that...Ch. 7 - Suppose you discovered a new bacterial strain from...Ch. 7 - Because many persistent bacterial infections...
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- What is a biological indicator organism? Using specific examples and specific contexts, explain how the concept of microbial indicator organisms can be applied to help control the occurrence and spread of disease. Ces = Notes Comments 6,666 MAY Ai 11 W MacBook Airarrow_forwardEnumerate the various Types of Microbial Control, identify the Principles Involved and give 3 Examples to each.arrow_forwardDifferent types of sampling designs are here that may be used depending on the types of studies. Which sampling design you may recommend for the following experiments : 1. To investigate the disease incidence in a field of tomato 2. To investigate the nosocomial infection in people 3. To investigate the microbial diversity in an agricultural fieldarrow_forward
- What are the advantages and disadvantages of plate count technique over other methods of quantifying microbial populations?arrow_forwardDefine and differentiate among the major terms for microbial control,citing examples of each.arrow_forwardAre you able to identify the lag, log, stationary and death phase in using these growth curves?Are you able to calculate the generation time for this microbe under the two conditions?arrow_forward
- Explain the role of cultivation-independent methods to study microorganisms in the environment.arrow_forwardThere are different types of sampling designs that may be used depending on the types of studies. Which sampling design you may recommend for the following experiments : a. To investigate the disease incidence in a field of tomato b. To investigate the nosocomial infection in people c. To investigate the microbial diversity in an agricultural fieldarrow_forwardDecimal Reduction time is a measurement of What percentage of a microbial population is removed during a given antimicrobial treatment. How long it takes for a given treatment to kill 10% of a microbial population. How long it takes for a given treatment to kill 90% of a microbial population. How long it takes for a given treatment to kill 100% of a microbial population. How long it takes to inhibit the growth of 99% of a population. How fast you can find books on bacteria and viruses in the library's science section. :-)arrow_forward
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