Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 3A
A use-dilution test was used to evaluate two disinfectants against Salmonella choleraesuis. The results were as follows:
- a. Which disinfectant was the most effective?
- b. Which disinfectant should be used against Staphylococcus?
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a) explain in your own words how to do a nitrate reduction test to identify unknown bacteria
b) explain in your own words how to perform a phenol red broth (prb) test to help identify unknown bacteria
The Kirby -Bauer antimicrobial sensitivity testing method relies on:
A. The inhibition of one antimicrobial by another
B. The diffusion of antimicrobials in paper discs
C. Serial dilutions of antimicrobials in test tubes
D. A gradient of an antimicrobial on a paper strip
Koch's postulates include all of the following EXCEPT
O 1) Isolate the organism in pure culture.
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O 2)
patient.
O 3) Inoculate a test animal with the isolated organism.
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5)
The organism isolated from the test animal must match the organism isolated
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Chapter 7 Solutions
Microbiology: An Introduction
Ch. 7 - The thermal death time for a suspension of...Ch. 7 - If pasteurization does not achieve sterilization,...Ch. 7 - Thermal death point is not considered an accurate...Ch. 7 - Prob. 4RCh. 7 - DRAW IT A bacterial culture was in log phase in...Ch. 7 - How do autoclaving, hot air, and pasteurization...Ch. 7 - How do salts and sugars preserve foods? Why are...Ch. 7 - Prob. 8RCh. 7 - A large hospital washes burn patients in a...Ch. 7 - Prob. 10R
Ch. 7 - Which of the following does not kill endospores?...Ch. 7 - Which of the following is most effective for...Ch. 7 - Prob. 3MCQCh. 7 - Which of the following cannot be used to sterilize...Ch. 7 - Prob. 5MCQCh. 7 - The data were obtained from a use-dilution test...Ch. 7 - The data were obtained from a use-dilution test...Ch. 7 - Prob. 8MCQCh. 7 - A classmate is trying to determine how a...Ch. 7 - Which of the following is most likely to be...Ch. 7 - Prob. 1ACh. 7 - For each of the following bacteria, explain why it...Ch. 7 - A use-dilution test was used to evaluate two...Ch. 7 - To determine the lethal action of microwave...Ch. 7 - Entamoeba histolytica and Giardia lamblia were...Ch. 7 - Between March 9 and April 12five chronic...Ch. 7 - Prob. 3CAE
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