Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Textbook Question
Chapter 17.11, Problem 1CR
What organism is the current record holder for the upper temperature limit for growth?
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Time in minutes
Determine the following:
1.
The shortest generation time (shortest cell doubling time, in mins) of the organism
2. The growth rate of the organism at the point where its generation time is shortest
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Describe the organism's growth curve using the numerical data you obtained from your calculations of
generation time and growth rate.
Cell numbers
Why does the growth rate rise with increasing temperature and then fall again at higher temperatures?
How does lowering the temperature 15°C from the optimal growth temperature affect growth rate?
Chapter 17 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 17.1 - Since cells of Halobacterium require high levels...Ch. 17.1 - What benefit does bacteriorhodopsin confer on...Ch. 17.1 - Contrast the roles of bacteriorhodopsin,...Ch. 17.2 - Prob. 1MQCh. 17.2 - Prob. 2MQCh. 17.2 - Prob. 1CRCh. 17.3 - Prob. 1MQCh. 17.3 - Prob. 2MQCh. 17.3 - What two major physiological features unify...Ch. 17.4 - Prob. 1MQ
Ch. 17.4 - Prob. 2MQCh. 17.4 - Prob. 1CRCh. 17.5 - Prob. 1MQCh. 17.5 - Prob. 2MQCh. 17.5 - Prob. 1CRCh. 17.6 - Prob. 1MQCh. 17.6 - Prob. 2MQCh. 17.6 - Prob. 1CRCh. 17.7 - Prob. 1MQCh. 17.7 - Prob. 1CRCh. 17.8 - What form of energy metabolism is widespread among...Ch. 17.8 - Prob. 2MQCh. 17.8 - Prob. 1CRCh. 17.9 - Prob. 1MQCh. 17.9 - Prob. 2MQCh. 17.9 - Prob. 1CRCh. 17.10 - What can we conclude about the...Ch. 17.10 - Prob. 2MQCh. 17.10 - Prob. 1CRCh. 17.11 - Prob. 1MQCh. 17.11 - Why would it be impossible for organisms to grow...Ch. 17.11 - What organism is the current record holder for the...Ch. 17.12 - How do hyperthermophiles keep proteins and DNA...Ch. 17.12 - How are the lipids and ribosomes of...Ch. 17.12 - What is reverse DNA gyrase and why is it important...Ch. 17.13 - What phylogenetic and physiological evidence...Ch. 17.13 - Prob. 2MQCh. 17.13 - Which chemolithotrophic lifestyle seems best...Ch. 17.13 - Why might H2 metabolism have evolved as a...Ch. 17 - Using the phylogenetic tree in Figure 17.1 as a...Ch. 17 - Prob. 2AQ
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- Does thermal inversionoccur in the winter or in thesummer?arrow_forwardCalculate doubling time (td) and specific growth rate (μ) by using logarithmic growth stage.arrow_forwardAnswer the following question and choose the correct option: Which phase has the specific growth rate condition u = 0? A) Delay phase B) Stationary phase C) Death phasearrow_forward
- What terms are used to describe organisms whose growthpH optimum is very high? Very low?arrow_forwardWhat is the equation that represents the mass balance of the exponential phase of bacterial growth? Name each variable.arrow_forwardDoes the "lag" phase always occur during microbial growth? Explain.arrow_forward
- Are you able to identify the lag, log, stationary and death phase in using this growth curve? Are you able to calculate the generation time for the microbial under this condition?arrow_forwardList the five categories of optimum temperature and describe a corresponding environment in which a representative might thrive?arrow_forwardIf a population of mold spores tripled in 12 hours, what is the growth rate? If there were 350 mold spores in the origianl sample, how many mold spores would there be after 18 hours?arrow_forward
- d) Since we know this bacterial organism thrives in colder areas of the world, what can be said about the effect of temperature on the growth patterns ofthis bacterial organism? How would increasing the temperature affect the growth constant? e) If the bacterial organism is resistant to antibiotics, how would administering antibiotics affect the growth of this organism?arrow_forwardList and define five terms used to express the temperature-related growth capabilities of microbes.arrow_forwardCalculate the doubling time (td) and specific growth rate (μ) using the logarithmic growth stage of the microorganism growth medium given below.arrow_forward
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