CUSTOM PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 9781266032844
Author: WILLEY
Publisher: MCG
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Chapter 7.8, Problem 1MI
Why is it important to have no more than about 250 colonies on the plate when counting colonies to determine
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Chapter 7 Solutions
CUSTOM 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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- How to interpret this Maximum Likelihood tree?arrow_forwardWhy do you not preserve some diseased specimens using the herbarium method?arrow_forwardA population with three life-stages separated by 3 years is modelled by a Leslie matrix, resulting in these predictions. The x-axis shows the number of time steps in the vector dynamics from the Leslie matrix multiplication. How many years before the long-term dynamics take over? a) 0 b) 2 c) 5 d) 15 What is the long term prediction for this population? a) decreases to zero b) anything could happen c) increases to infinity d) stable If the population started with many more animals and in different proportions from each life stage, would the prediction be the same or different? If the population started with many more animals and in different proportions from each life stage, in the long term dynamics what would be the ratio of newborns (stage 1) to youths (stage 2) to adults (stage 3). a) about 1 to 1 to 1 b) about 4 to 2 to 1 c) about 6 to 3 to 1 d) no way to judgearrow_forward
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- The following questions refer to the information and figure below. Experimental populations (average) 1.8 - 1.6 1.4 1.2 - Ancestral population 1.0 5000 10 000 15 000 20 000 Generation In this eight-year experiment, 12 populations of E. coli, each begun from a single cell, were grown in low-glucose conditions for 20 000 generations. Each culture was introduced to a fresh growth medium every 24 hours. Occasionally, samples were removed from the populations, and their fitness in low-glucose conditions was tested against that of members sampled from the ancestral (common ancestor) E. coli population. Which of the following is less likely to promote bacterial survival over evolutionary time in a low- glucose environment? Increased sensitivity to, and ability to move toward, whatever glucose is present in its habitat Increased ability to synthesize glucose from amino acid precursors Increased efficiency at transporting glucose into the cell from the environment Increased ability to survive…arrow_forwardAfter challenges containing the outbreak, the Kelatavicla lab had to close in January 2018 . Six mice are given antibiotics, certified bad bacteria free, and are shipped to a lab in Montreal. Among the 6 mice, which have been carefully chosen, the frequency of the R allele is 0.5 . The Montreal lab maintains this population under the conditions described in column C for several years. Predict what might happen to the frequency of the R allele over the next several years. Justify your choice with concepts and how they apply to the given case. Ensure you use appropriate terminology to name/identify the concepts and processes.arrow_forwardAfter challenges containing the outbreak, the Kelatavicla lab had to close in January 2018 . Six mice are given antibiotics, certified bad bacteria free, and are shipped to a lab in Montreal. Among the 6 mice, which have been carefully chosen, the frequency of the R allele is 0.5 . The Montreal lab maintains this population under the conditions described in column C for several years. Predict what might happen to the frequency of the R allele over the next several years. Justify your choice with concepts and how they apply to the given case. Ensure you use appropriate terminology to name/identify the concepts and processes.arrow_forward
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