Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Chapter 7.8, Problem 1CC
Briefly describe each technique by which microbial population numbers may be determined and give its advantages and disadvantages.
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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 - MICRO INQUIRY Identify the regions of the growth...Ch. 7.4 - Retrieve, Infer, Apply Define microbial growth.Ch. 7.4 - Retrieve, Infer, Apply Describe the phases of the...Ch. 7.4 - Why would cells that are vigorously growing when...Ch. 7.4 - Calculate the growth rate constant and generation...Ch. 7.4 - Suppose the generation time of a bacterium is 90...Ch. 7.5 - What is the difference between halophilic and...Ch. 7.5 - Why do facultative anaerobes grow best at the...Ch. 7.5 - Retrieve, Infer, Apply 1. How do microorganisms...Ch. 7.5 - Retrieve, Infer, Apply 2. Define water activity...Ch. 7.5 - Prob. 1.3CCCh. 7.5 - Retrieve, Infer, Apply 1. Define pH, acidophile,...Ch. 7.5 - Retrieve, Infer, Apply Classify each of the...Ch. 7.5 - Retrieve, Infer, Apply 3. Describe the mechanisms...Ch. 7.5 - Retrieve, Infer, Apply 1. What are cardinal...Ch. 7.5 - Prob. 3.2CCCh. 7.5 - Prob. 3.3CCCh. 7.5 - Prob. 3.4CCCh. 7.5 - Retrieve, Infer, Apply Describe the five types of...Ch. 7.5 - Retrieve, Infer, Apply What are the toxic effects...Ch. 7.5 - Retrieve, Infer, Apply Where would you expect to...Ch. 7.5 - Retrieve, Infer, Apply List the types of...Ch. 7.5 - Prob. 5.3CCCh. 7.5 - Prob. 5.4CCCh. 7.6 - MICRO INQUIRY What biomolecules make up the...Ch. 7.6 - Prob. 1CCCh. 7.6 - Prob. 2CCCh. 7.6 - Prob. 3CCCh. 7.6 - Retrieve, Infer, Apply What is quorum sensing?...Ch. 7.6 - Retrieve, Infer, Apply How is the communication...Ch. 7.7 - Prob. 1CCCh. 7.7 - What are peptones, yeast extract, beef extract,...Ch. 7.7 - Retrieve, Infer, Apply Describe four ways in which...Ch. 7.7 - What are pure cultures and why are they important?...Ch. 7.7 - Retrieve, Infer, Apply It is known that microbial...Ch. 7.7 - Retrieve, Infer, Apply How might an enrichment...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. 2CCCh. 7.8 - Prob. 3CCCh. 7.8 - For each of the following, which enumeration...Ch. 7.9 - Prob. 1MICh. 7.9 - Prob. 1CCCh. 7.9 - Prob. 2CCCh. 7.9 - Prob. 3CCCh. 7 - Prob. 1RCCh. 7 - Prob. 2RCCh. 7 - Prob. 3RCCh. 7 - Prob. 4RCCh. 7 - Prob. 5RCCh. 7 - Prob. 6RCCh. 7 - As an alternative to diffusible signals, suggest...Ch. 7 - If you wished to obtain a pure culture of bacteria...Ch. 7 - Prob. 3ALCh. 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 - Prob. 7ALCh. 7 - Prob. 8ALCh. 7 - Prob. 9AL
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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
- Enumerate the various Types of Microbial Control, identify the Principles Involved and give 3 Examples to each.arrow_forwardWhich of the following types of data produce curves similar in shape to the graph? Select all that apply 1.Bacterial growth in a culture 2.A normal distribution of height in a population of students 3.Exponential population growth 4.Haemoglobin binding of oxygen 5.Log transformations of drug dose curves 6.Osmotic fragility of red blood cells 7.A standard curve for an enyme assayarrow_forwardWhat are the advantages and disadvantages of plate count technique over other methods of quantifying microbial populations?arrow_forward
- Define and differentiate among the major terms for microbial control,citing examples of each.arrow_forwardExplain the role of cultivation-independent methods to study microorganisms in the environment.arrow_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
- There 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_forwardIn an in situ sample, describe the method that you woulduse to study the symbiotic interactions between various microbial species?arrow_forwardList mechanisms for control of microbial organisms for physical, chemical, and mechanical methods.arrow_forward
- Recall that while FOVS will change with changing objectives, the size of the organism itself does not change. Consider the next example. Example #1 Polyp Objective: 40x Example #2 Polyp blObjective: 10x Example #3 Polyp Objective: 4x Field of view: 500 µm Field of view: 2000 µm Field of view: 5000 µm Estimated # of Estimated # of Estimated # of organisms that fit organisms that fit organisms that fit across the FOV: 1 Approximate size of organism: 500μm/ 1 = 500 μm across the FOV: 4 across the FOV: 10 Approximate size of organism: 2000µm/ 4 = 500 µm Approximate size of organism: 5000μm/ 10-500 μm %3D The three examples above are of the same jellyfish polyp, but at varying objectives. What is the size of the polyp at the 40x objective? 10x? 4x? Which objective visualizes the polyp best? Which objective would be best used to estimate organism size with?arrow_forwardIn the this figure showing a microbial death curve, what is the Decimal Reduction Time for the microbe being killed? Plotting the typical microbial death curve logarithmically (red line) results in a straight line. Log10 of number of surviving cells 6.0 5.0 4.0 3.0 2.0 1.0 1 One log decrease = 90% of population killed 3 Time (min) 2 3 minutes 6 minutes 1 minute 24 minutes 4 5 T 6 1,000,000 750,000 500,000 250,000 100,000 Arithmetic number of surviving cells Cannot be determined from grapharrow_forwardExplain how an endospore-producing organism is suitable for use in bioterrorism.arrow_forward
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