Brock Biology of Microorganisms (14th Edition)
14th Edition
ISBN: 9780321897398
Author: Michael T. Madigan, John M. Martinko, Kelly S. Bender, Daniel H. Buckley, David A. Stahl, Thomas Brock
Publisher: PEARSON
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Textbook Question
Chapter 20.6, Problem 1MQ
How does the formation of CaCO3 skeletons by calcareous phytoplankton retard CO2 uptake and help maintain ocean water pH?
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Chapter 20 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 20.1 - How is new organic matter made in nature?Ch. 20.1 - In what ways are oxygenic photosynthesis and...Ch. 20.1 - What is a methane hydrate?Ch. 20.2 - Why does Syntrophomonas need a partner organism in...Ch. 20.2 - Prob. 2MQCh. 20.2 - What is the final product of acetogenesis?Ch. 20.3 - What is nitrogen fixation and why is it important...Ch. 20.3 - Prob. 2MQCh. 20.3 - How does the compound nitrapyrin benefit both...Ch. 20.4 - Is H2S a substrate or a product of the...
Ch. 20.4 - Prob. 2MQCh. 20.4 - Prob. 3MQCh. 20.5 - In what oxidation state is Fe in Fe(OH)3? In FeS?...Ch. 20.5 - Prob. 2MQCh. 20.5 - Why is excreted organic matter important to many...Ch. 20.6 - How does the formation of CaCO3 skeletons by...Ch. 20.6 - Prob. 2MQCh. 20.7 - What forms of mercury are most toxic to organisms?Ch. 20.7 - Prob. 2MQCh. 20.8 - What is the greenhouse effect and what causes it?Ch. 20.8 - What is the fate of most nitrogen used in...Ch. 20.8 - Why are the OMZs expanding and what are the likely...Ch. 20 - Prob. 1RQCh. 20 - Prob. 2RQCh. 20 - The principal form of nitrogen on Earth is N2,...Ch. 20 - Prob. 4RQCh. 20 - Prob. 5RQCh. 20 - Prob. 6RQCh. 20 - Prob. 7RQCh. 20 - Prob. 8RQCh. 20 - Compare and contrast the carbon, sulfur, and...Ch. 20 - 14C-labeled cellulose is added to a vial...Ch. 20 - Prob. 3AQ
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- Describe the major members of the planktonic community. Describe the eff ects on the upper trophic levels of declining numbers of phytoplankton.arrow_forwardIn what ways are Ca and Si cycling in oceanwaters similar, and in what ways do they differ?How do the calcium and silica cycles couple to thecarbon cycle?arrow_forwardIn habitats where water conservation is not especially necessary, is CAM metabolism more or less advantageous than C3 or C4 metabolism? Why?arrow_forward
- Design an experiment to solve the following problem:Determine the rate of methanogenesis (CO2 + 4H2 S CH4 +2H2O) in anoxic lake sediments and whether or not itis H2-limited.arrow_forwardFor every mega joule of energy used by the phytoplankton in a Lake Michigan.How many joules of energy are used in building cell tissue in the lake trout?arrow_forwardHelp pleasearrow_forward
- Why is release of sulfide from oxygen minimumzones infrequent, occurring at times of exceptionallyhigh surface water productivity?arrow_forwardGasping for Oxygen Explain how each of the following contribute to dissolved oxygen decline in aquatic ecosystems: Rising water temperatures slowing streams organic pollutants/eutrophicationarrow_forwardWhy is the stringent response typically active during nitrogen starvation but not in response to carbon sources?arrow_forward
- If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), which of the following molecules produced by the algae (refer to the accompanying figure) would be least likely to contain 18O in subsequent analyses? a) 3-phosphoglycerate b) ADP c) glyceraldehyde 3-phosphate (G3P) d) ribulose bisphosphate (RuBP)arrow_forwardList some metabolic strategies that have evolved to enable microbial survival in oligotrophic marine habitats. Which do you think is most successful in terms of numbers of microbes and metabolic flexibility? Explain your answerarrow_forwardThinking Analytically Is phytoplankton productivity highest at the ocean surface? What advantage would optimum productivity at a depth below the surface provide to phytoplankton?arrow_forward
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