Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 20.13, Problem 1CR
Deep-sea sediments show decreasing nutrient levels with depth and thus the microbes that reside there experience constant near-starvation conditions. Although not yet cultured, novel phyla of Archaea inhabit deep marine sediments (as well as the terrestrial deep subsurface), and these organisms likely survive by scavenging the trace levels of both organic matter and electron acceptors present there.
What are sources of organic matter in deep-sea sediments that could be used to support growth?
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Chapter 20 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 20.1 - Prob. 1MQCh. 20.1 - Prob. 2MQCh. 20.1 - Prob. 3MQCh. 20.1 - How does a microbial population differ from a...Ch. 20.1 - Prob. 1CRCh. 20.2 - Prob. 1MQCh. 20.2 - What is a biogeochemical cycle? Give an example...Ch. 20.2 - Prob. 1CRCh. 20.3 - Prob. 1MQCh. 20.3 - Prob. 2MQ
Ch. 20.3 - Prob. 1CRCh. 20.4 - Prob. 1MQCh. 20.4 - Prob. 2MQCh. 20.4 - Prob. 3MQCh. 20.4 - Prob. 1CRCh. 20.5 - Prob. 1MQCh. 20.5 - Prob. 2MQCh. 20.5 - Prob. 1CRCh. 20.6 - Which phylum of Bacteria dominates bacterial...Ch. 20.6 - What factors govern the extent and type of...Ch. 20.6 - Prob. 3MQCh. 20.6 - In what soil horizon are microbial numbers and...Ch. 20.7 - Prob. 1MQCh. 20.7 - Prob. 2MQCh. 20.7 - Prob. 3MQCh. 20.7 - Prob. 1CRCh. 20.8 - Prob. 1MQCh. 20.8 - Prob. 2MQCh. 20.8 - Prob. 3MQCh. 20.8 - Prob. 1CRCh. 20.9 - What did the Deepwater Horizon spill tell us about...Ch. 20.9 - Prob. 2MQCh. 20.9 - Why is release of sulfide from oxygen minimum...Ch. 20.10 - How does Ostreococcus differ from Prochlorococcus?...Ch. 20.10 - How does the organism Prochlorococcus contribute...Ch. 20.10 - How does Roseobacter differ from Prochlorococcus?Ch. 20.10 - Prob. 1CRCh. 20.11 - What is proteorhodopsin and why is it so named?...Ch. 20.11 - Prob. 2MQCh. 20.11 - Prob. 3MQCh. 20.11 - Why are dilute culture media used for isolating...Ch. 20.11 - Prob. 1CRCh. 20.12 - Prob. 1MQCh. 20.12 - What molecular adaptations are found in...Ch. 20.12 - Prob. 1CRCh. 20.13 - Prob. 1MQCh. 20.13 - Prob. 2MQCh. 20.13 - What alternative sources of energy are suggested...Ch. 20.13 - Deep-sea sediments show decreasing nutrient levels...Ch. 20.14 - How does a warm hydrothermal vent differ from a...Ch. 20.14 - Prob. 2MQCh. 20.14 - Prob. 3MQCh. 20.14 - Would you expect to find the same types of...Ch. 20 - Prob. 1AQCh. 20 - Prob. 2AQCh. 20 - Global warming has been suggested to result in...
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- Explain two ways in which archaea metabolize inorganiccompounds 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_forwardIs oxygen a requirement for the growth of all organisms? Describe the following in terms of oxygen need.arrow_forward
- discuss at least five different examples of extremophiles on Earth and discuss how they thrive in their special environments (or, each person can choose one extremophile to research and share with the rest of the group). Extrapolate these extreme survival abilities to the kinds of life that might be able to survive in the very different environments throughout our Solar System? Do you think that watery places like Europa or Enceladus would be a better environment to search for life as opposed to somewhere like the clouds of Venus? Why or why not? For more information on possible life in Venus' atmosphere,arrow_forwardDefend or refute this statement: The upper-temperature limit to life is unrelated to the stability of proteins or nucleic acids and 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_forwardFor most part of our planet’s history, organisms are microbial. Explain why this is the case?arrow_forward
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