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 14.13, Problem 1MQ
For Escherichia coli, why is more energy released in aerobic respiration than during NO3− reduction?
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Chapter 14 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 14.1 - What is the fundamental difference between an...Ch. 14.1 - What is the purpose of chlorophyll and...Ch. 14.1 - Why can phototrophic green bacteria grow at light...Ch. 14.1 - What are the functions of light-harvesting and...Ch. 14.2 - In which phototrophs are carotenoids found?...Ch. 14.2 - How does the structure of a phycobilin compare...Ch. 14.2 - Phycocyanin is blue-green. What color of light...Ch. 14.2 - What accessory pigments are present in...Ch. 14.3 - What parallels exist in the processes of...Ch. 14.3 - What is reverse electron flow and why is it...
Ch. 14.3 - What is the difference between cyclic and...Ch. 14.3 - What is reverse electron transport and why is it...Ch. 14.4 - Differentiate between cyclic and noncyclic...Ch. 14.4 - What is the key role of light energy in the...Ch. 14.4 - What evidence is there that anoxygenic and...Ch. 14.4 - Prob. 1CRCh. 14.5 - Prob. 1MQCh. 14.5 - How much NADPH and ATP is required to make one...Ch. 14.5 - Contrast autotrophy in the following phototrophs:...Ch. 14.5 - QWhat is a carboxysome, and what is its role in...Ch. 14.6 - Prob. 1MQCh. 14.6 - What is FeMo-co and what does it do?Ch. 14.6 - How is acetylene useful in studies of nitrogen...Ch. 14.6 - How might the ability to fix nitrogen help a...Ch. 14.7 - In a coupled reaction, how can you tell the...Ch. 14.7 - How does aerobic respiration differ from anaerobic...Ch. 14.7 - Describe the major differences between...Ch. 14.7 - Prob. 1CRCh. 14.8 - What enzyme is required for hydrogen bacteria to...Ch. 14.8 - Why is reverse electron flow unnecessary in H2...Ch. 14.8 - QWhich inorganic electron donors are used by the...Ch. 14.9 - Prob. 1MQCh. 14.9 - In terms of intermediates, how does the Sox system...Ch. 14.9 - Prob. 1CRCh. 14.10 - Prob. 1MQCh. 14.10 - What is the function of rusticyanin and where is...Ch. 14.10 - How can Fe2+ be oxidized under anoxic conditions?Ch. 14.10 - Prob. 1CRCh. 14.11 - Prob. 1MQCh. 14.11 - Prob. 2MQCh. 14.11 - Prob. 1CRCh. 14.12 - What are the electron donor and acceptor in the...Ch. 14.12 - What does electron transport in anammox bacteria...Ch. 14.12 - Compare CO2 fixation in anammox bacteria and...Ch. 14.12 - Prob. 1CRCh. 14.13 - For Escherichia coli, why is more energy released...Ch. 14.13 - How do the products of NO3 reduction differ...Ch. 14.13 - Where is the dissimilative nitrate reductase found...Ch. 14.13 - Prob. 1CRCh. 14.14 - How is SO42 converted to SO32 during dissimilative...Ch. 14.14 - Contrast the growth of Desulfovibrio on H2 versus...Ch. 14.14 - Give an example of sulfur disproportionation.Ch. 14.14 - Prob. 1CRCh. 14.15 - Prob. 1MQCh. 14.15 - What is reductive dechlorination and why is it...Ch. 14.15 - How does anaerobic glucose catabolism differ in...Ch. 14.15 - Compare and contrast ferric iron reduction with...Ch. 14.16 - What is the purpose of CO dehydrogenase?Ch. 14.16 - If acetogens conserve energy using the Rnf...Ch. 14.16 - What is electron bifurcation and what role does it...Ch. 14.16 - Compare and contrast acetogens with methanogens in...Ch. 14.17 - Which coenzymes function as C1 carriers in...Ch. 14.17 - In methanogens growing on H2 + CO2, how is carbon...Ch. 14.17 - How is ATP made in methanogenesis when the...Ch. 14.17 - What are the major differences in the conservation...Ch. 14.18 - When using CH4 as electron donor, why is...Ch. 14.18 - In which two ways does the ribulose monophosphate...Ch. 14.18 - What is unique about methanotrophy in...Ch. 14.18 - Prob. 1CRCh. 14.19 - Why is H2 produced during many types of...Ch. 14.19 - Why is acetate formation in fermentation...Ch. 14.19 - Define the term substrate-level phosphorylation:...Ch. 14.20 - How can homo- and heterofermentative metabolism be...Ch. 14.20 - Butanediol production leads to greater ethanol...Ch. 14.20 - QWhat are the major fermentation products of...Ch. 14.21 - Compare the mechanisms for energy conservation in...Ch. 14.21 - What type of substrates are fermented by...Ch. 14.21 - What are the substrates for the Clostridium...Ch. 14.21 - Prob. 1CRCh. 14.22 - Why does Propionigenium modestum require sodium...Ch. 14.22 - Of what benefit is the organism Oxalobacter to...Ch. 14.22 - Prob. 3MQCh. 14.22 - Give an example of a fermentation that does not...Ch. 14.23 - Give an example of interspecies H2 transfer. Why...Ch. 14.23 - Why can a pure culture of Syntrophomonas grow on...Ch. 14.23 - Why is syntrophy also called interspecies H2...Ch. 14.24 - How do monooxygenases differ in function from...Ch. 14.24 - What is the final product of catabolism of a...Ch. 14.24 - Prob. 3MQCh. 14.24 - How do monooxygenases differ from dioxygenases in...Ch. 14.25 - What is the benzoyl-CoA pathway, and how might it...Ch. 14.25 - How is hexane oxygenated during anoxic catabolism?Ch. 14.25 - Prob. 1CRCh. 14 - The growth rate of the phototrophic purple...Ch. 14 - Prob. 2AQCh. 14 - A fatty acid such as butyrate cannot be fermented...Ch. 14 - When methane is made from CO2 (plus H2) or from...
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- Consider the steps of the krebs cycle and electron carrier chain and answer: a) How many ATPs are produced from 10 Pyruvato molecules? b) How many ATPs are produced from 12 Acetyl CoA molecules?arrow_forwardEscherichia coli is a facultative anaerobe that ferments sugars. In the absence of oxygen, it does not use its electron transport chain but can still use an F1F0-ATPase. In the presence of oxygen, it respires oxygen through the electron transport chain. In the presence of oxygen, how does E.coli obtain its three energy intermediates?arrow_forwardHow does the presence of cristae in the mitochondrial membrane increase the productivity of aerobic respiration in eukaryocytes?arrow_forward
- In aerobic respiration, cells generate heat as they grow. The amount of heat generated by cells is proportional to the amount of oxygen they consume. Accordingly, it was found that 460 kJ is generated per gmol of O2 consumed. Suppose that you need to choose a fermenter for optimal growth of Bacillus subtilis cells. It is known that the maximum oxygen demand of B. subtilis is 100 mol m3 h1. A vendor offers you a reactor with a cylindrical shape (2.8 m in diameter) and 15 m³ volume. The reactor includes a cooling coil with 30 m length and a pipe diameter of 6 cm, through which. For practical purposes, power input by the rotating impeller inside the bioreactor can be neglected. Does this reactor meet the cooling requirements of your production process? Note: If you think you need more information than you are provided with here to solve this problem, use online resources to find the required information. In this case, please state your source clearly. Note: You may assume that the…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_forwardWhich of the following statements correctly describes why white muscle fibers do not need is mini mitochondria as red muscle fibers? a) want muscle fibers use anaerobic respiration which does not occur in the mitochondria b) what muscle fibers use anaerobic respiration which requires more efficient mitochondria than aerobic respiration c) white muscle fibers get more oxygen than the red muscle fibersarrow_forward
- Define the term substrate-level phosphorylation:How does it differ from oxidative phosphorylation?What compound(s) do fermentative bacteria need tosynthesize in order to make ATP by substrate-levelphosphorylation?arrow_forwardA newly identified bacterium is unable to synthesize ubiquinone. A mobile electron carrier called CXC3 is used as a substitute. From the information provided in the table, calculate the delta G knot prime and the Keq value at 298 K for the redox reaction that occurs in this bacterium’s electron transport chain. Explain the impact that using CXC 3 instead of ubiquinol will have on ATP production in the cell. How might this cell adapt to this situation?arrow_forwardWhy would sulfur-oxidizing bacteria store sulfur? +arrow_forward
- Yeast are facultative anaerobic organisms that can make ATP by aerobic respiration if oxygen is present, but are also capable of switching to fermentation under anaerobic conditions. For thousands of years, humans have used yeast, such as Saccharomyces cervesisiae, to ferment grapes (starch sugar) to make wine (alcoholic beverage). Four batches of wine were made following the contents and conditions listed in the table below, Contents and Conditions of Four Batches of Wine Yeast Solution Water Grape Solution Batch Added Container (L) (L) (L) Lid 1 40 0.0 8 оpen 2 40 0.2 8 closed 40 0.2 8. оpen 4 40 0.2 closed 9. The yeast (Saccharomyces cerevisiae) would produce the greatest amount of ATP is the batch of wine numbered 1 4 D. The highest alcohol (ethanol) content would be found in the batch of wine numbered 02 3arrow_forwardA chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. Describe a result of this organism’s metabolic pathways that could be beneficial to another organism (of any type) living in close proximityarrow_forwardI need to find two gram positive and two gram negative pathogenic bacteria that may be classified as being facultative anaerobes. What tissues or organs do these bacteria target in the human body? Why is it to their advantage to be able to use either aerobic respiration or anaerobic respiration/fermentation?arrow_forward
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