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 11RQ
Summary Introduction
To review:
The following:
1. The various means through which humans control microbial growth.
2. D-value and the phenol coefficient.
Introduction:
Microorganisms are the smallest organisms that are visible through a microscope. Microbes are fast growing organisms that multiply very rapidly within colonies. They require essential nutrients for their growth. Some microbes are beneficial for humans while others are harmful in nature.
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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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- Sydney Brenner isolated Salmonella typhimurium mutants that were implicated in the biosynthesis of tryptophan and would not grow on minimal medium. When these bacterial mutants were tested on minimal medium to which one of four compounds (indole glycerol phosphate, indole, anthranilic acid, and tryptophan) had been added, the growth responses shown in the following table were obtained. Mutant Minimal medium Anthranilic Indole glycerol acid Indole Tryptoph phosphate trp-1 trp-2 trp-3 trp-4 trp-6 trp-7 trp-8 trp-9 trp-10 trp-11 - Give the order of indole glycerol phosphate, indole, anthranilic acid, and tryptophan in a biochemical pathway leading to the synthesis of tryptophan. Indicate which step in the pathway is affected by each of the mutations. + 1 + 1 IIarrow_forward4. (a) Which of the following chemical reactions is an overall oxidation-reduction (redox) reaction that involves oxidation number changes in their reactions? A. NaOH + H₂O → Na¹ + H3O+ + OH B. HCl + H₂O → H3O+ + Cl- C. CO₂ + H₂O → H+ + CO3²- D. N₂ + 3H₂ → 2NH3arrow_forwardexplain the various factors affecting agar-agar gels and what is the source, manufacturing, and properties of agar-agar and what is the uses of agar-agar in food products?arrow_forward
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