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
expand_more
expand_more
format_list_bulleted
Question
Chapter 13, Problem 9RQ
Summary Introduction
Purple bacteria are otherwise termed as purple photosynthetic bacteria. They are classified into two major groups: purple sulfur bacteria and purple non-sulfur bacteria. These bacteria carry out photosynthesis with the help of pigments bacteriochlorophyll a or b as well as many carotenoids.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Determine the following about Corynebacteria diphtheria.....
Determine the microbes possible mechanism(s) of cellular respiration.
Do they perform aerobic respiration or anaerobic respiration?
Are they capable of performing fermentation?
Imagine you are trying to use an organism to remove organic matter in a wastewater treatment plant (i.e., poop). You would like to maximize the amount of waste consumed while also minimizing the amount of cells produced.
Assuming these organisms exist and all other things are equal, what combination of chemoorganotrophic organism and environment would make the most sense to use?
An organism that only has the Entner-Duoduroff pathway under anaerobic conditions.
This was a trick question – the organism would have to be a chemolithotroph since it is consuming a chemical.
An organism that only has the Entner-Duoduroff pathway under aerobic conditions.
An organism that only has the Embden Meyer Parnas pathway under anaerobic conditions.
An organism that only has the Embden Meyer Parnas pathway under anaerobic conditions.
Nitrosomonas is a photophobic (light-avoiding) chemoautotrophic bacterium that converts ammonia into nitrite. Explain how the organism can fix CO2 via the Calvin cycle in the absence of sunlight.
Chapter 13 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 13.1 - What is the fundamental difference between an...Ch. 13.1 - Prob. 2MQCh. 13.1 - Why can phototrophic green bacteria grow at light...Ch. 13.2 - In which phototrophs are carotenoids found?...Ch. 13.2 - How does the structure of a phycobilin compare...Ch. 13.2 - Phycocyanin is blue-green. What color of light...Ch. 13.3 - What parallels exist in the processes of...Ch. 13.3 - What is reverse electron flow and why is it...Ch. 13.3 - Prob. 3MQCh. 13.4 - Differentiate between cyclic and noncyclic...
Ch. 13.4 - What is the key role of light energy in the...Ch. 13.4 - What evidence is there that anoxygenic and...Ch. 13.5 - Prob. 1MQCh. 13.5 - How much NADPH and ATP is required to make one...Ch. 13.5 - Contrast autotrophy in the following phototrophs:...Ch. 13.6 - Prob. 1MQCh. 13.6 - Prob. 2MQCh. 13.7 - What enzyme is required for hydrogen bacteria to...Ch. 13.7 - Why is reverse electron flow unnecessary in H2...Ch. 13.8 - Prob. 1MQCh. 13.8 - In terms of intermediates, how does the Sox system...Ch. 13.9 - Prob. 1MQCh. 13.9 - What is the function of rusticyanin and where is...Ch. 13.9 - How can Fe2+ be oxidized under anoxic conditions?Ch. 13.10 - Prob. 1MQCh. 13.10 - Prob. 2MQCh. 13.10 - Prob. 3MQCh. 13.11 - Prob. 1MQCh. 13.11 - Why is acetate formation in fermentation...Ch. 13.12 - How can homo- and heterofermentative metabolism be...Ch. 13.12 - Butanediol production leads to greater ethanol...Ch. 13.13 - Compare the mechanisms for energy conservation in...Ch. 13.13 - What type of substrates are fermented by...Ch. 13.13 - What are the substrates for the Clostridium...Ch. 13.14 - Why does Propionigenium modestum require sodium...Ch. 13.14 - Of what benefit is the organism Oxalobacter to...Ch. 13.14 - Prob. 3MQCh. 13.15 - Give an example of interspecies H2 transfer. Why...Ch. 13.15 - Why can a pure culture of Syntrophomonas grow on...Ch. 13.16 - How does aerobic respiration differ from anaerobic...Ch. 13.16 - Prob. 2MQCh. 13.17 - For Escherichia coli, why is more energy released...Ch. 13.17 - How do the products of NO3 reduction differ...Ch. 13.17 - Where is the dissimilative nitrate reductase found...Ch. 13.18 - How is SO42 converted to SO32 during dissimilative...Ch. 13.18 - Contrast the growth of Desulfovibrio on H2 versus...Ch. 13.18 - Give an example of sulfur disproportionation.Ch. 13.19 - Prob. 1MQCh. 13.19 - Prob. 2MQCh. 13.19 - Prob. 3MQCh. 13.20 - Which coenzymes function as C1 carriers in...Ch. 13.20 - In methanogens growing on H2 + CO2, how is carbon...Ch. 13.20 - How is ATP made in methanogenesis when the...Ch. 13.21 - Prob. 1MQCh. 13.21 - What is reductive dechlorination and why is it...Ch. 13.21 - How does anaerobic glucose catabolism differ in...Ch. 13.22 - How do monooxygenases differ in function from...Ch. 13.22 - What is the final product of catabolism of a...Ch. 13.22 - Prob. 3MQCh. 13.23 - When using CH4 as electron donor, why is...Ch. 13.23 - Prob. 2MQCh. 13.23 - In which two ways does the ribulose monophosphate...Ch. 13.24 - Prob. 1MQCh. 13.24 - How is hexane oxygenated during anoxic catabolism?Ch. 13.24 - Prob. 3MQCh. 13 - Prob. 1RQCh. 13 - Prob. 2RQCh. 13 - What accessory pigments are present in...Ch. 13 - Prob. 4RQCh. 13 - Prob. 5RQCh. 13 - Prob. 6RQCh. 13 - REVIEW QUESTIONS
7. What two enzymes are unique to...Ch. 13 - Prob. 8RQCh. 13 - Prob. 9RQCh. 13 - QWhich inorganic electron donors are used by the...Ch. 13 - Prob. 11RQCh. 13 - Define the term substrate-level phosphorylation:...Ch. 13 - Prob. 13RQCh. 13 - Prob. 14RQCh. 13 - Prob. 15RQCh. 13 - Prob. 16RQCh. 13 - Prob. 17RQCh. 13 - Prob. 18RQCh. 13 - Compare and contrast acetogens with methanogens in...Ch. 13 - Compare and contrast ferric iron reduction with...Ch. 13 - How do monooxygenases differ from dioxygenases in...Ch. 13 - Prob. 22RQCh. 13 - Prob. 23RQCh. 13 - Prob. 1AQCh. 13 - The growth rate of the phototrophic purple...Ch. 13 - Prob. 3AQCh. 13 - A fatty acid such as butyrate cannot be fermented...Ch. 13 - When methane is made from CO2 (plus H2) or from...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What metabolic process creates the rotten-egg smell characteristic of many anaerobic environments?arrow_forwardWrite the complete redox reactions for the following microbial metabolisms. Give an example of a type of environment where such bacteria may thrive (will there be plentiful O2? Organics-rich sediment? mineral-bearing rock formations etc?) Oxidation of glucose (C6H12O6) by sulfate (H2SO4) reducers (redox products are CO2 and H2S). Oxidation of ferrous hydroxide (Fe(OH)2) by iron-oxidizing bacteria in oxygen (O2)-rich environment. Redox products are Fe(OH)3 and H2 Please write all redox reactions correctly and explain! Thanks!arrow_forwardCompare and contrast the utilization of H2S by apurple phototrophic bacterium and by a colorless sulfurbacterium such as Beggiatoa.arrow_forward
- The anaerobic, chemoautotrophic archaeobacterium Methanococcus jannaschii uses which of the following carbon-fixation pathways to obtain organic carbon from CO2? the Hill reaction the reductive acetyl-CoA pathway the Calvin cycle oxygenic photosynthesis the Krebs cyclearrow_forwardIn anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron acceptors? nitrogenlaxation nitrification denitrification both nitrogen fixation and nitrificationarrow_forwardWhich of the following pathways is used to fix inorganic carbon into organic form (like methane), by the anaerobic, chemoautotrophic archaeobacterium Methanococcus jannaschii? the reductive acetyl-CoA pathway the Hill reaction the Krebs cycle the Calvin cycle oxygenic photosynthesisarrow_forward
- Chemolithotrophs meet their energy needs by oxidizing organic food molecules. True False Which of the following events does not occur during the energy-investment phase of glycolysis? Hexokinase catalyzes the transfer of a phosphate group from ATP to glucose to form glucose-6-phosphate. Phosphofructokinase catalyzes the isomerization of glucose-6-phosphate to fructose-6-phosphate. Fructose-bisphosphate aldolase cleaves Fructose-1,6-bisphosphate into two different three-carbon sugars. Dihydroxyacetone phosphate can be converted to glyceraldehyde-3-phosphate with the help of the enzyme triose phosphate isomerase.arrow_forwardWhat aeration condition (presence or absence of O2) favors cell growth? What is the metabolic explanation for this influence of oxygen on biomass formation?arrow_forwardYeast 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_forward
- What are some ecological strategies that aerobicsulfide-oxidizers use to compete with the chemicaloxidation of H2S by atmospheric O2?arrow_forwardDescribe 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_forwardIdentifying carboxysomes in a bacterium suggests that this bacterium is using the Calvin cycle to convert the concentrated CO2 into biomass.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Biochemical Tests-Part 1; Author: Southern Stacker;https://www.youtube.com/watch?v=a-i9vANfQWQ;License: Standard Youtube License