Prescott's Microbiology
10th Edition
ISBN: 9781259662621
Author: WILLEY
Publisher: MCG
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Textbook Question
Chapter 8.3, Problem 1MI
MICRO INQUIRY How might one verify that filtration removed all microorganisms?
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• This is micrograph of a Gram
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A. What is the cell morphology?
B. What is the cell arrangement?
C. What is the Gram reaction of
this organism?
Briefly compare filtration and ultraviolet (UV) radiation as antimicrobial methods.
Title: Spoilage of coconut water
Aim: To assess the diversity of psychrotrophic bacteria causing spoilage in coconut water
How might storage of the coconut water samples at room temperature after collection and before plating influence the results obtained from the samples incubated at 5ºC?
Chapter 8 Solutions
Prescott's Microbiology
Ch. 8.1 - MICRO INQUIRY Which types of agents can be used...Ch. 8.1 - Retrieve, Infer, Apply 1. Define the following...Ch. 8.1 - Retrieve, Infer, Apply 2. What is the difference...Ch. 8.2 - MICRO INQUIRY Examine graph (a). How long would it...Ch. 8.3 - MICRO INQUIRY How might one verify that filtration...Ch. 8.3 - Retrieve, Infer, Apply 1. What are depth filters...Ch. 8.3 - Retrieve, Infer, Apply 2. Describe the operation...Ch. 8.3 - Retrieve, Infer, Apply 3. During the 20092010...Ch. 8.4 - Retrieve, Infer, Apply 1. Describe how an...Ch. 8.4 - Retrieve, Infer, Apply 2. In the past, spoiled...
Ch. 8.4 - Prob. 2.1RIACh. 8.4 - Retrieve, Infer, Apply 2. What is the correlation...Ch. 8.5 - MICRO INQUIRY Why is it important that all of...Ch. 8.5 - MICRO INQUIRY Why are cross-linking agents such as...Ch. 8.5 - Retrieve, Infer, Apply 1. Why are most...Ch. 8.5 - Retrieve, Infer, Apply Construct a table that...Ch. 8.5 - Retrieve, Infer, Apply 3. Which disinfectants or...Ch. 8.5 - Retrieve, Infer, Apply 4. How do phenolic agents...Ch. 8.5 - Retrieve, Infer, Apply 5. Which physical or...Ch. 8.6 - Retrieve, Infer, Apply 1. Briefly explain how the...Ch. 8.6 - Retrieve, Infer, Apply How does being in a biofilm...Ch. 8.6 - Retrieve, Infer, Apply Suppose hospital custodians...Ch. 8.6 - Retrieve, Infer, Apply Briefly describe the phenol...Ch. 8.6 - Retrieve, Infer, Apply Why might it be necessary...Ch. 8.7 - Retrieve, Infer, Apply How would you explain to a...Ch. 8.7 - Retrieve, Infer, Apply Propose the use of specific...Ch. 8 - Throughout history, spices have been used as...Ch. 8 - Design an experiment to determine whether an...Ch. 8 - Suppose you tested the effectiveness of...Ch. 8 - The death of Geobacillus stearothermophilus spores...
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- Guide Questions: Differentiate the types of culture media based on its physical state and uses. What makes agar good support for microbial growth?arrow_forwardExplain why the following steps are necessary during subculturing: Cooling the inoculating loop before touching the inoculum/culture ?arrow_forwardWhat is the advantage of culture-independent analysis over culture-dependent analysis of microorganisms?arrow_forward
- Name five functional traits of microorganisms. What dose the functional diversity describe? Do we analyze these traits with culture-dependent methods or culture-independent method?arrow_forwarde) Other than the sedimentation tank, what are TWO other possible alternatives to recycle the cells back to the chemostat. Discuss the advantages and disadvantages of these alternatives in comparison to the sedimentation tank.arrow_forwardWhy might viable cell cultures be of more use in microbialtaxonomy than preserved specimens?arrow_forward
- In aseptic technique, what will happen if the inoculated solid plated media is not inverted prior to incubation?arrow_forwardHow might incubating plates at 37°C influence the results of the quantitative dilution and plating of the coconut water samples?arrow_forward(2) how are aseptic technique similar and different in the lab and Healthcare field?Be specific and explain at least 2 differences and two similarities. (3) You are asked to develop a method of transfer an unknown organism from a liquid broth to a solid petri dish.list each step that you would have to take .be specificarrow_forward
- Heat-labile material to be introduced to culture medium was filtered using membrane filters with unknown pore size. Effect: Rationale:arrow_forwardDiscuss fresh, living preparations vs fixed preparations. What are the advantages and disadvantages of each technique in a microbiology laboratory?arrow_forwardAnswer the following questions briefly and concisely 1.How do bacteria in a chemostat and those in a batch culture vary from one another? 2. What happens in a chemostat if the dilution rate is higher than the organism's maximum specific growth rate? 3.Does a chemostat require the use of pure cultures? 4. Why would a complicated culture media for Leuconostoc mesenteroides be simpler to make than one with a fixed chemical composition?arrow_forward
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