Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 2R
If pasteurization does not achieve sterilization, why is pasteurization used to treat food?
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Choose two from the following culture preservations that are best to use when only an ordinary refrigerator is available for storage:
a) Drying
b) Mineral oil overlay
c) Freezing with liquid nitrogen
d) Lyophilization
e) Periodic transfer to fresh medium
In sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down under the category: a) For “autoclaving” only, B) For Dry heat oven sterilization ,And C) Can be sterilized with either.
Materials:
200-ml Erlenmeyer flask Stove
500-ml Erlenmeyer flask Autoclave
10-mL graduated cylinder Analytical balance
100-ml graduated cylinder pH meter
Spatula Stirring rod
100-mL beaker Test tubes
Distilled water Petri dish
Stirring rod Alcohol lamp
Glass dropper
Define sterilization.
Chapter 7 Solutions
Microbiology: An Introduction (13th Edition)
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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- UV light is used in clean rooms and some operating rooms. what are the limitations of using UV light as a means of sterilization?arrow_forwardWhat method can be used to achieve sterilization?arrow_forwardWhat is the difference between sterilization and disinfection? For lab applications which is preferred?arrow_forward
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