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 15.12, 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 15 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 15.1 - Why is it necessary to consider microbial...Ch. 15.1 - What are three reasons that functional traits...Ch. 15.1 - What is convergent evolution and how is it...Ch. 15.2 - What form of photosynthesis was most likely the...Ch. 15.2 - Which bacterial phyla contain phototrophs?Ch. 15.3 - What are the differentiating properties of the...Ch. 15.3 - Prob. 2MQCh. 15.3 - How are prochlorophytes, such as Prochlorococcus,...Ch. 15.4 - What is the source of the purple color from which...Ch. 15.4 - Prob. 2MQ
Ch. 15.4 - Compare and contrast the metabolism, morphology,...Ch. 15.5 - What are some similarities between purple...Ch. 15.5 - Prob. 2MQCh. 15.5 - Compare and contrast the metabolism of purple...Ch. 15.6 - Prob. 1MQCh. 15.6 - Prob. 2MQCh. 15.6 - Prob. 1CRCh. 15.7 - Prob. 1MQCh. 15.7 - Prob. 2MQCh. 15.7 - Prob. 1CRCh. 15.8 - What types of anoxygenic phototrophs contain...Ch. 15.8 - Prob. 2MQCh. 15.8 - In what ways is Chloracidobacterium thermophilum...Ch. 15.9 - What are the typical electron donors used by...Ch. 15.9 - What bacterial phyla are known to contain...Ch. 15.9 - Prob. 1CRCh. 15.10 - What are the typical electron donors used by...Ch. 15.10 - Prob. 2MQCh. 15.10 - In what ways are sulfur-reducing bacteria...Ch. 15.11 - Describe the energy and carbon metabolism of...Ch. 15.11 - What are some ecological strategies that sulfur...Ch. 15.11 - Prob. 1CRCh. 15.12 - What mechanisms do free-living diazotraphs use to...Ch. 15.12 - Prob. 2MQCh. 15.12 - What are some ways that diazotrophs protect...Ch. 15.13 - Under what conditions would you expect...Ch. 15.13 - Prob. 2MQCh. 15.13 - Prob. 1CRCh. 15.14 - In what phylogenetic groups are Geobacter and...Ch. 15.14 - Prob. 2MQCh. 15.14 - Prob. 1CRCh. 15.15 - What habitat characteristics govern the diversity...Ch. 15.15 - How do aerobic neutrophilic iron-oxidizers keep...Ch. 15.15 - Prob. 1CRCh. 15.16 - What is the difference between a methanotroph and...Ch. 15.16 - What is unique about the methanotroph...Ch. 15.16 - What are the differences between type I and type...Ch. 15.17 - Prob. 1MQCh. 15.17 - What are the different ways in which species of...Ch. 15.17 - Compare and contrast the life cycle of Myxococcus...Ch. 15.18 - Prob. 1MQCh. 15.18 - Prob. 2MQCh. 15.18 - Prob. 1CRCh. 15.19 - What are the major differences between spirochetes...Ch. 15.19 - Name two diseases of humans caused by spirochetes.Ch. 15.19 - Contrast the motility of spirochetes with that of...Ch. 15.20 - Prob. 1MQCh. 15.20 - Prob. 2MQCh. 15.20 - Contrast the life cycle of Hyphomicrobium with...Ch. 15.21 - Describe how a sheathed bacterium such as...Ch. 15.21 - List two metals that are oxidized by sheathed...Ch. 15.21 - In what environment might you expect to find...Ch. 15.22 - What benefit do magnetic bacteria accrue from...Ch. 15.22 - Would you expect to find greigite or magnetite in...Ch. 15.22 - In what way does a magnetosome contribute to the...Ch. 15 - Describe a key physiological feature of the...Ch. 15 - Describe the metabolism for each of the following...Ch. 15 - Using an example from each of the morphologically...
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- Can someone please help me with 3 multiple choice question, please choose the best that fits, Thank you 1) Most of the nitrogen on earth is contained in nitrogen gas in the atmosphere, which of the following orgnisms convert nitrogen to a form accessible to the rest of the biological community ? A)fungi B)nitrogen fixing prokaryotes C) plants D) nitrogen fixing protists 2)if a meteor impact or volcanic eruption injected a lot of dust into the atmosphere and significantly reduced the sunlight reaching Earth's surface for one year, which of the following marine communitites would be least affected? A)coral reef B)estuary C) intertidal D) deep -sea-vent E) wetlands 3)In terrestrial biomes, which factor is dependent on all the others? A)mineral nutrient availability B)annual average precipitation C) soil structure D)the specific plant and animal species E) light availabilityarrow_forwardWhat is economic importance of bacteria?arrow_forwardWhat is the process by which bacteria convert nitrogen gas in the air to ammonia ?arrow_forward
- Nitrogen ___________ 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_forwardWhere would you expect to find purple sulfur bacteria in nature?arrow_forwardWhy would farmers be concerned about nitrifying bacteria?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_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_forward
- Some groups of bacteria can go dormant during periods of environmental stress through the formation of _______. A) magnetosomes B) peptidoglycan C) endospores D) piliarrow_forwardDraw and describe one nitrogen-fixing bacterium contained within these root nodules as seen under the microscope.arrow_forwardWhy are marine cyanobacteria so amazingly successful?arrow_forward
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