EBK BROCK BIOLOGY OF MICROORGANISMS
15th Edition
ISBN: 8220103633352
Author: Stahl
Publisher: PEARSON
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Chapter 15.5, Problem 2MQ
Summary Introduction
Aerobic anoxygenic phototrophs are obligate aerobes that acquire energy from light through anoxygenic photosynthesis. These bacteria capture light energy and store it in the form of ATP (adenosine triphosphate). These bacteria are Gram-negative. They contain numerous photosynthetic pigments such as bacteriochlorophyll a, b, c, d, e, f and so on.
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Which statement among A-C is false regarding photoheterotrophs?
A) O they can convert sunlıght to chemical energy in the form of ATPS
B) O they are unlike other phototrophs in that they cannot fix carbon dioxide
) O they must obtain their carbon from organic compounds
D) Onone of A-C is false
Can water be used for chlorophyll extraction? Why?
What proportion of total world productivity is achieved by chemosynthesis?
Chapter 15 Solutions
EBK BROCK BIOLOGY OF MICROORGANISMS
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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- 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_forwardGreen sulfur bacteria are able to generate which of the following inorganic product molecules during anoxygenic photosynthesis? elemental sulfur glucose C6H12O6 oxygen hydrogen sulfide Green sulfur bacteria are able to generate which of the following inorganic product molecules during anoxygenic photosynthesis? elemental sulfur glucose C6H12O6 oxygen hydrogen sulfidearrow_forwardWhat would life be like for photoautotrophs if there were no chemoheterotrophs if there were no photoautotrophs?arrow_forward
- Which of the following is NOT true about chemoheterotrophs? Which of the following is NOT true about chemoheterotrophs? Use organic compounds as a source of both carbon and energy Can use light for energy and CO2 as a source of carbon Oxidize organic compounds (e.g., glucose) to generate ATP They are ultimately dependent on autotrophs to provide their carbon and energy None of the other four answers (all are true of chemoheterotrophs)arrow_forwardDefine each of the following terms with regard to their energy and carbon source: a. Photoautotroph b. photoheterotroph; c. chemoautotroph d. chemoheterotroph. please solve accurate and exact.arrow_forwardDifferentiate the photosynthesis in cyanobacteria from other photosynthetic bacteria, e.g. green sulfur bacteria, purple sulfur bacteria, green non-sulfur bacteria and purple non-sulfur bacteria by showing their balanced photosynthetic reaction. Photosynthesis in Cyanobacteria: Photosynthesis in other bacteria:arrow_forward
- You grow plants under two watering treatments: high water and low water. You examine photosynthetic rates as a function of light for plants in each treatment. Your results are in attached image A) Which treatment is dashed line B? a) high watering b) low watering B) What abiotic factor is limiting photosynthesis between the open circle and closed circle for treatment B? a) light b) water c) carbon dioxide C) What process is limiting photosynthesis between the open triangle and closed triangle for treatment A? a) light-dependent reactions b) calvin cyclearrow_forwardHow does green sulphur bacteria perform photosynthesis?arrow_forwardWhich of the following types of organisms use an organic source of carbon? a photoautotroph a photoheterotroph a chemoautotroph and a chemoheterotroph a chemoautotropharrow_forward
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