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 7R
Nitrogen and phosphorus added to beaches following an oil spill encourage the growth of natural oil-degrading bacteria. Explain why the bacteria do not grow if nitrogen and phosphorus are not added.
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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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- Discuss the possibility of life on Mars. In reference to extremophiles. Defend or refute this statement: The upper-temperature limit to life is unrelated to the stability of proteins or nucleic acids. How influential is microbial activity on the geological processes of mineral formation and deposition compared to biological processes? (argue both sides of this one). What challenges and advantages do you see with the use of extremeophiles in industrial or bioremediation applications?arrow_forwardjust do d and earrow_forwardYou're in charge of bioremediation of jet fuel-contaminated soil. Your colleague advises that you add nitrogen and phosphate to the soil to encourage the development of naturally existing hydrocarbon-degrading bacteria. However, you've just read about a new microbe slurry containing nutrients and a surfactant that's being marketed. What information do you need to gather in order to choose the best course of action? How are you going to get these numbers?arrow_forward
- Discuss the possibility of life on Mars. Will extremophiles prove useful? Can you explain the upper-temperature limit to life unrelated to the stability of proteins or nucleic acids? How influential is microbial activity on the geological processes of mineral formation and deposition compared to biological processes? Can you argue both sides? What are the challenges and advantages of the use of extremeophiles in industrial or bioremediation applications?arrow_forwardDescribe the importance of the nitrogen and carbon cycles and the role of microbes in their maintenance. Discuss biofilms and their relevance to infectious diseases. Discuss population growth and the phases of a typical bacterial growth curve. Describe generation time for a bacterial population Explain how bacterial growth correlates to disease. Describe how environmental changes can alter the shape of a growth curve. Categorize microbes based on their preferred environmental niches (pH, temperature, oxygen and salt). Identify the biological properties that allow different classes of microbes to grow in extreme environments.arrow_forwardRefer to the following graph of Carbon Assimilation vs. Irradiance of several cultures of dinoflagellates in the northern Baltic Sea. Samples were treated with varying levels of pH. What is the effect of pH on the metabolism of the cultures? a) The growth of the culture is limited by increasing pH. b) The growth of the culture is increased by increasing pH. c) The growth of the culture is not limited by increasing pH. d) The growth of the culture is not affected by increasing pH or increasing irradiation.arrow_forward
- Diseases that involve biofilm-producing bacteria are serious concern. They are not easily treated compared with those involving free-floating bacteria. Explain three reasons why biofilm formers are more pathogenic.arrow_forwardYou are responsible for the bioremediation of soil contaminated by jet fuel. Your coworker suggests you fertilize the soil with nitrogen and phosphorus to promote the growth of naturally occurring hydrocarbon-degrading microbes. However, you just read about a new mixture of microbes sold in a slurry with nutrients and a surfactant. What data do you need to collect to decide which approach would be best? How will you obtain these data?arrow_forwardA genetically engineered microorganism used successfully in bioremediation of oil spills is of which species?arrow_forward
- The term "turbidity" in microbiology refers to: a cloudy appearance in broth, meaning microorganisms did grow a cloudy appearance in broth, meaning microorganisms did not grow a clear appearance in broth, meaning microorganisms did not grow the clump of cells at the top of a broth a clear appearance in broth, meaning microroganisms did growarrow_forward3. (a) Comparing the culture-dependant (e.g., colony forming units count) and DNA- based (e.g., PCR) bacterial number quantification methods, what are the primary disadvantages of using culture-dependent methods to quantify bacterial numbers in an environmental sample? Use no more than three sentences or bullet points to present your answer succinctly.arrow_forwardd) Since we know this bacterial organism thrives in colder areas of the world, what can be said about the effect of temperature on the growth patterns ofthis bacterial organism? How would increasing the temperature affect the growth constant? e) If the bacterial organism is resistant to antibiotics, how would administering antibiotics affect the growth of this organism?arrow_forward
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