Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 14, Problem 9RQ
Summary Introduction
To review:
The contribution of the diverse form of anaerobic respiration and lithotrophy to the ecosystem.
Introduction:
Anaerobic respiration is a process that takes place in an environment where the oxygen level is scarce in areas such as wetland soil, water, and the human digestive tract. Obligate lithotrophs contribute to building biomass by the fixation of carbon dioxide.
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Why must autotrophic organisms also respire or ferment in addition to fixing CO2?
Compare photolithoautotrophy with chemolithoautotrophy. Do you think it is possible for an ecosystem to exist solely on the organic carbon generated by chemolithotrophy (i.e., without any contribution by photosynthetic organisms)? Explain your reasoning.
Considering the negative aspects of anaerobic respiration, how could natural selection have produced something so inefficient?
Chapter 14 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 14.1 - Prob. 1TQCh. 14.1 - Prob. 2TQCh. 14.2 - Prob. 1TQCh. 14.2 - Prob. 2TQCh. 14.2 - Prob. 3TQCh. 14.3 - Prob. 1TQCh. 14.3 - Prob. 2TQCh. 14.3 - Prob. 3TQCh. 14.4 - Prob. 1TQCh. 14.5 - Prob. 1TQ
Ch. 14.5 - Prob. 2TQCh. 14.6 - Prob. 1TQCh. 14 - Prob. 1RQCh. 14 - Prob. 2RQCh. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - Prob. 5RQCh. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - Prob. 8RQCh. 14 - Prob. 9RQCh. 14 - Prob. 10RQCh. 14 - Prob. 11RQCh. 14 - Prob. 1TQCh. 14 - Prob. 2TQCh. 14 - Prob. 3TQCh. 14 - Prob. 4TQ
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- Photosynthetic organisms are normally considered the most important primary producers; which organisms are primary producers in hydrothermal vent communities?arrow_forwardWhat are the similarities between evaporation and transpiration?arrow_forwardWhat is biochemical oxygen demand? How is BOD related to sewage?arrow_forward
- Describe the following metabolisms (photolithoautotroph, chemolithoautotroph, chemoorganoheterotroph, and photoorganotroph) What is the carbon source for biomass for Autotrophs and Heterotrophs: What is the energy source for Chemotrophs and Phototrophs: What is the electron source for Lithotrophs and Organotrophs:arrow_forwardWhy might chemosynthetic communities exist only in places like the deep-ocean floor rather than across a wide range of land and sea habitats, the way photosynthesis-based communities are?arrow_forwardwhat is the influent biodegradable chemical oxygen demand?arrow_forward
- 4) Which is one major difference between anaerobic and aerobic respiration? A) Electron donor B) Electron acceptor C) Use of electron transport D) Use of proton motive forcearrow_forwardWhy does the boundary layer surrounding a photosynthetic organism make it more difficult to exchange CO2 and O2?arrow_forwardWhat are the possible fates of methane in anoxic zones?arrow_forward
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