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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Chapter 14.12, Problem 2MQ
Summary Introduction
The nitrogen fixation process is carried out by the nitrogen fixing microbes or the diazotrophs. These nitrogen fixers convert the di-nitrogen gas into useful forms of ammonia which can be stored as the nitrogen source for the microbial cells. The nitrogen fixation process is carried out typically when other forms of nitrogen are absent. The enzyme nitrogenase produced by the nitrogen fixers is responsible for the reduction of nitrogen.
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Chapter 14 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 14.1 - Why is it necessary to consider microbial...Ch. 14.1 - What are three reasons that functional traits...Ch. 14.2 - What form of photosynthesis was most likely the...Ch. 14.3 - What are the differentiating properties of the...Ch. 14.3 - Prob. 2MQCh. 14.4 - What is the source of the purple color from which...Ch. 14.4 - Prob. 2MQCh. 14.5 - What are some similarities between purple...Ch. 14.5 - Prob. 2MQCh. 14.6 - Prob. 1MQ
Ch. 14.6 - Prob. 2MQCh. 14.7 - Prob. 1MQCh. 14.7 - Prob. 2MQCh. 14.8 - What types of anoxygenic phototrophs contain...Ch. 14.8 - Prob. 2MQCh. 14.9 - What are the typical electron donors used by...Ch. 14.9 - What bacterial phyla are known to contain...Ch. 14.10 - What are the typical electron donors used by...Ch. 14.10 - Prob. 2MQCh. 14.11 - Describe the energy and carbon metabolism of...Ch. 14.11 - What are some ecological strategies that sulfur...Ch. 14.12 - What mechanisms do free-living diazotraphs use to...Ch. 14.12 - Prob. 2MQCh. 14.13 - Under what conditions would you expect...Ch. 14.13 - Prob. 2MQCh. 14.14 - In what phylogenetic groups are Geobacter and...Ch. 14.14 - Prob. 2MQCh. 14.15 - What habitat characteristics govern the diversity...Ch. 14.15 - How do aerobic neutrophilic iron-oxidizers keep...Ch. 14.16 - Prob. 1MQCh. 14.16 - Prob. 2MQCh. 14.17 - What is the difference between a methanotroph and...Ch. 14.17 - What is unique about the methanotroph...Ch. 14.18 - Prob. 1MQCh. 14.18 - Prob. 2MQCh. 14.19 - Prob. 1MQCh. 14.19 - What are the different ways in which species of...Ch. 14.20 - What are the major differences between spirochetes...Ch. 14.20 - Name two diseases of humans caused by spirochetes.Ch. 14.21 - Prob. 1MQCh. 14.21 - Prob. 2MQCh. 14.22 - Describe how a sheathed bacterium such as...Ch. 14.22 - List two metals that are oxidized by sheathed...Ch. 14.23 - What benefit do magnetic bacteria accrue from...Ch. 14.23 - Would you expect to find greigite or magnetite in...Ch. 14.24 - Prob. 1MQCh. 14.24 - Prob. 2MQCh. 14 - What is convergent evolution and how is it...Ch. 14 - Which bacterial phyla contain phototrophs?Ch. 14 - How are prochlorophytes, such as Prochlorococcus,...Ch. 14 - Compare and contrast the metabolism, morphology,...Ch. 14 - Compare and contrast the metabolism of purple...Ch. 14 - REVIEW QUESTIONS
6. In what group of organisms...Ch. 14 - Prob. 7RQCh. 14 - In what ways is Chloracidobacterium thermophilum...Ch. 14 - Prob. 9RQCh. 14 - In what ways are sulfur-reducing bacteria...Ch. 14 - Prob. 11RQCh. 14 - What are some ways that diazotrophs protect...Ch. 14 - Prob. 13RQCh. 14 - Prob. 14RQCh. 14 - Prob. 15RQCh. 14 - Prob. 16RQCh. 14 - Prob. 17RQCh. 14 - What are the differences between type I and type...Ch. 14 - Prob. 19RQCh. 14 - Compare and contrast the life cycle of Myxococcus...Ch. 14 - Contrast the motility of spirochetes with that of...Ch. 14 - Contrast the life cycle of Hyphomicrobium with...Ch. 14 - Prob. 23RQCh. 14 - In what way does a magnetosome contribute to the...Ch. 14 - Prob. 25RQCh. 14 - Describe a key physiological feature of the...Ch. 14 - APPLICATION QUESTIONS
2. Describe the metabolism...
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- What is economic importance of bacteria?arrow_forwardWhat is the process by which bacteria convert nitrogen gas in the air to ammonia ?arrow_forwardNitrogen ___________ A)is a growth-limiting nutrient for many organisms. B)is used to build proteins and carbohydrates. C)is extracted from the atmosphere by a few types of bacteria. D)Both A and C are correct. E)A, B, and C are correct.arrow_forward
- Which is true regarding bacterial and archaea species that use nitrogen and sulfur compounds in different ways? A) O Sulfate-reducing bacteria are those that respire anaerobically using sulfate. B) O Nitrifying bacteria are lithotrophs that produce nitrite and nitrate. C) O Denitrifying bacteria are those that respire anaerobically using various oxidized forms of nitrogen. D) O Sulfur oxidizing bacteria are lithotrophs that obtain energy from sulfur compounds either aerobically or anaerobically E) O All the above are true.arrow_forwardStatement which is true about bacteria ? A) All bacteria are autotrophs B) Most of them are heterotrophs but some are autotrophs C) All bacteria heterophs D) All bacteria are photosyntheticarrow_forwardWhy are marine cyanobacteria so amazingly successful?arrow_forward
- Organic forms of nitrogen are converted to inorganic forms via what process? a)photosynthesis b)consumption c)nitrogen fixation d)decompositionarrow_forwardWhich of the following is an example of a symbiotic pair of organisms? Question 3 options: A) elk and deer B) algae and yeast C) orchid and mycorrhizae D) Escherichia coli and Rhizobiumarrow_forwardSome groups of bacteria can go dormant during periods of environmental stress through the formation of _______. A) magnetosomes B) peptidoglycan C) endospores D) piliarrow_forward
- Why are nitrogen-fixing bacteria ecologically important? Why are humans interested in nitrogen-fixing bacteria? (Economic applications?)arrow_forwardName any two free – living nitrogen fixing bacteria.arrow_forwardSome marine bacteria, such as Cytophaga species, live and grow well inside fish guts and in waters below freezing temperatures. These bacteria are: a) Halophilic b) Psychrophilic c) Friophilic d) Thermophilic e) Mesophilicarrow_forward
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