Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 5, Problem 3TQ
Summary Introduction
To review:
The reason behind the differences in the D values of Bacillus stearothermophilus and Bacillus coagulans.
Introduction:
D-value (decimal reduction time) is the time period required by the chemical agents to kill or destroy 90 percent of the population. Certain microbes are useful in nature while others are harmful. The useful microbes are cultured in laboratories on the essential nutrient medium. The microbial growth is controlled by various methods such as sterilization, disinfection, and antisepsis.
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Strain X. spp. is a rod-shaped, anaerobic, Gram-positive bacterium with peritrichous flagella and pili that could use glucose and dye as its sole carbon source. Answer the following sections (a, b and c).
a) With a doubling time of 240 minutes and a starting population size of 10 bacteria cells. How many bacteria cells will be present after 72 hours, assuming no cell death?
b) Draw the diagram and describe motility required for the bacteria to gradient concentration of attractant (food)?
c) Draw the diagram of the up flow packed-bed column biofilm reactor under continuous operation and label completely
Chapter 5 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 5.2 - Prob. 1TQCh. 5.2 - Prob. 2TQCh. 5.2 - Prob. 3TQCh. 5.3 - Prob. 1TQCh. 5.4 - Prob. 1TQCh. 5.5 - Prob. 1TQCh. 5.5 - Prob. 2TQCh. 5.5 - Prob. 3TQCh. 5.6 - Prob. 1TQCh. 5.7 - Prob. 1TQ
Ch. 5.7 - Prob. 2TQCh. 5.7 - Prob. 3TQCh. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 1TQCh. 5 - Prob. 2TQCh. 5 - Prob. 3TQCh. 5 - Prob. 4TQCh. 5 - Prob. 5TQ
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