Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 6, Problem 4A
Flask A contains yeast cells in glucose-minimal salts broth incubated at 30°C with aeration. Flask B contains yeast cells in glucose-minimal salts broth incubated at 30°C in an anaerobic jar. The yeasts are facultative anaerobes.
- a. Which culture produced more ATP?
- b. Which culture produced more alcohol?
- c. Which culture had the shorter generation time?
- d. Which culture had the greater cell mass?
- e. Which culture had the higher absorbance?
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What is the proper term for an organism whose optimum growth range is between 20 and 50C but can grow well at refrigerator temperatures?
a. psychrophile
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A glass flask is rinsed and autoclaved after use. It was then filled with sterile media in a sterile environment and covered. A few days, microbial growth appears in the flask. Assume the media and sterile environment is guaranteed to be sterile. What most likely caused the growth in the flask?
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Chapter 6 Solutions
Microbiology: An Introduction
Ch. 6 - Prob. 1RCh. 6 - Prob. 2RCh. 6 - Prob. 3RCh. 6 - Seven methods of measuring microbial growth were...Ch. 6 - By deep-freezing, bacteria can be stored without...Ch. 6 - A pastry chef accidentally inoculated a cream pie...Ch. 6 - Nitrogen and phosphorus added to beaches following...Ch. 6 - Differentiate complex and chemically defined...Ch. 6 - DRAW IT Draw the following growth curves for E....Ch. 6 - NAME IT A prokaryotic cell hitched a ride to Earth...
Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Assume you inoculated 100 facultatively anaerobic...Ch. 6 - The term trace elements refers to a. the elements...Ch. 6 - Which one of the following temperatures would most...Ch. 6 - Which of the following is not a characteristic of...Ch. 6 - Which of the following types of media would not be...Ch. 6 - An organism that has peroxidase and superoxide...Ch. 6 - E. coli was incubated with aeration in a nutrient...Ch. 6 - Clostridium and Streptococcus are both...Ch. 6 - Most laboratory media contain a fermentable...Ch. 6 - Flask A contains yeast cells in glucose-minimal...Ch. 6 - Clinical Applications and Evaluation 1. Assume...Ch. 6 - Heat lamps are commonly used to maintain foods at...Ch. 6 - The number of bacteria in saliva samples was...
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