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 14.20, Problem 1MQ
How can homo- and heterofermentative
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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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- Your colleague handed you a novel strain of coli that is purifying a protein with a 6xHisTag; they claim it is superior to the TOP10 cells you have been using. But even with a larger culture size, you discover that your protein yield—using the same Ni-NTA column—is quite low. You discover that the novel strain of Escherichia coli generates an unusually high quantity of dicarboxylic acids, a byproduct of the citric acid cycle that is recognized for its ability to function as an all-purpose metal chelator. What do you think the issue is with purifying IMAC protein with this new strain of E. coli?arrow_forwardChlamydia are pathogenic bacteria that must be grown within a eukaryotic host cell. They rely on the host cell for many nutrients, including nucleotides, lipids, and amino acids. It is thus no surprise that when grown in co-culture with a host depleted of any of these metabolites, chlamydial growth declines. However, high levels of certain amino acids also inhibit chlamydial growth. Specifically, the amino acids leucine, isoleucine, methionine, and phenylalanine slow down the growth by inhibiting the amino acid transporter called BrnQ. On the other hand, if valine is present in the medium these amino acids have no effect on BrnQ. Discuss how this might be possiblearrow_forwardA series of auxotrophic mutants were isolated in Neurospora. Examination of fungi containing these mutations revealed that they grew on minimal medium to which various compounds (A, B, C, D) were added; growth responses to each of the four compounds are presented in the following table. Give the order of compounds A, B, C, and D in a biochemical pathway. Outline a biochemical pathway that includes these four compounds and indicate which step in the pathway is affected by each of the mutations. Compound Mutation number А в С A D 134 276 987 773 772 146 333 123 + + I +arrow_forward
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