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 21.5, Problem 3MQ
Why is excreted organic matter important to many iron oxidizers?
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Chapter 21 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 21.1 - How is new organic matter made in nature?Ch. 21.1 - In what ways are oxygenic photosynthesis and...Ch. 21.1 - What is a methane hydrate?Ch. 21.1 - The oxygen and carbon cycles are interconnected...Ch. 21.2 - Why does Syntrophomonas need a partner organism in...Ch. 21.2 - Prob. 2MQCh. 21.2 - What is the final product of acetogenesis?Ch. 21.2 - Prob. 1CRCh. 21.3 - What is nitrogen fixation and why is it important...Ch. 21.3 - Prob. 2MQ
Ch. 21.3 - How does the compound nitrapyrin benefit both...Ch. 21.3 - The principal form of nitrogen on Earth is N2,...Ch. 21.4 - Is H2S a substrate or a product of the...Ch. 21.4 - Prob. 2MQCh. 21.4 - Prob. 3MQCh. 21.4 - Bacteria play major roles in both the oxidative...Ch. 21.5 - In what oxidation state is Fe in Fe(OH)3? In FeS?...Ch. 21.5 - Prob. 2MQCh. 21.5 - Why is excreted organic matter important to many...Ch. 21.5 - Prob. 1CRCh. 21.6 - How does the formation of CaCO3 skeletons by...Ch. 21.6 - Prob. 2MQCh. 21.6 - Prob. 1CRCh. 21.7 - What forms of mercury are most toxic to organisms?Ch. 21.7 - Prob. 2MQCh. 21.7 - Prob. 3MQCh. 21.7 - Prob. 1CRCh. 21.8 - What is the greenhouse effect and what causes it?Ch. 21.8 - What is the fate of most nitrogen used in...Ch. 21.8 - Why are the OMZs expanding and what are the likely...Ch. 21.8 - Prob. 1CRCh. 21 - Compare and contrast the carbon, sulfur, and...Ch. 21 - 14C-labeled cellulose is added to a vial...Ch. 21 - Prob. 3AQ
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- Why would sulfur-oxidizing bacteria store sulfur? +arrow_forwardwhat does a negative result mean in an oxidase test?Select all that applies a)The bacteria may undergo anaerobic respiration b)The bacteria may have a cytochrome C oxidase c)The bacteria may undergo aerobic respiration d)The bacteria will not have cytochrome C oxidase e)None of the anwers are correctarrow_forwardAre all organisms with oxidative respitory pathways necessarily strict aerobes? Explain.arrow_forward
- What are the possible types of respiration that oxidase-positive samples might be capable of? Oxidase-negative?arrow_forwardIs H2S a substrate or a product of the sulfate-reducing bacteria?Of the chemolithotrophic sulfur bacteria?arrow_forwardDescribe the relationship between ammonia oxidizers and nitrite oxidizers.arrow_forward
- What is the difference between assimilatory nitrate reduction and denitrification? Which reaction is performed by many microbes, and which is a more specialized metabolic capability?arrow_forwardHow is water decontaminated and made safe to drink?arrow_forwardYou have discovered a new microorganism that oxidizes ammonia. How will you determine if this microbe is a thaumarchaeote or a bacterium?arrow_forward
- A chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. From where does this organism obtain its carbon?arrow_forwardA chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. How does this organism make proton motive force?arrow_forwardWhy is it possible for bacteria tosurvive on acetic acid as a sole carbon source, but not humanbeings?arrow_forward
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