Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 27, Problem 3R
In the sulfur cycle, microbes degrade organic sulfur compounds, such as (a) __, to release H2S, which can be oxidized by Thiobacillus to (b) __. This ion can be assimilated into amino acids by (c) __ or reduced by Desulfovibrio to (d) __. H2S is used by photoautotrophic bacteria as an electron donor to synthesize (e) __. The sulfur-containing by-product of this
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Why must nitrogen fixation occur in an anoxic (i.e., oxygen-free) environment?
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Chapter 27 Solutions
Microbiology: An Introduction
Ch. 27 - The koala is a leaf-eating animal. What can you...Ch. 27 - Give one possible explanation of why Penicillium...Ch. 27 - In the sulfur cycle, microbes degrade organic...Ch. 27 - Why is the phosphorus cycle important?Ch. 27 - DRAW IT 5. Identify where the following processes...Ch. 27 - Prob. 6RCh. 27 - Outline the treatment process for drinking water.Ch. 27 - Prob. 8RCh. 27 - Bioremediation refers to the use of living...Ch. 27 - NAME IT 10. These nitrogen-fixing prokaryotes...
Ch. 27 - Prob. 1ACh. 27 - Explain the effect of dumping untreated sewage...Ch. 27 - Activated sludge system a. the process takes place...Ch. 27 - Prob. 2MCQCh. 27 - Nitrogen fixation a. the process takes place under...Ch. 27 - Prob. 4MCQCh. 27 - The water used to prepare intravenous solutions in...Ch. 27 - CO2+H2SLightLightC6H12O6+S0 a. aerobic respiration...Ch. 27 - Prob. 7MCQCh. 27 - CO2+8H++8eCH4+2H2O a. aerobic respiration b....Ch. 27 - Prob. 9MCQCh. 27 - Coliforms are used as indicator organisms of...Ch. 27 - Flooding after two weeks of heavy rainfall in...Ch. 27 - The bioremediation process shown in the photograph...
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- Regarding bacteria that utilize respiration as a way to catabolize a complex carbon (food) source, which of A-D is true? A) O require the use of an electron transport chain B) O are generally considered heterotrophs C) O do not necessarily have to use oxygen as a terminal electron acceptor D) O do not fix carbon dioxide E) OA-D are all truearrow_forwardIron bacteria, sulfur-oxidizing bacteria, and nitrifying bacteria, which all oxidize inorganic compounds through a series of chemical reactions, are best described as O 1) photoheterotrophs 2) chemoheterotrophs O 3) chemolithotrophs. O 4) photoautotrophs 5) chemoautotrophs.arrow_forwardThe photosynthetic process used by the green sulfur bacteria, under anaerobic conditions, is best represented by which of the following balanced equations? 6CO2 + 12H2O C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2S C6H12O6 + 6S2 + 6H2O C12H22O11 + H2O C6H12O6 + C6H12O6 C6H12O6 + C6H12O6 C12H22O11 + H2O C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2Oarrow_forward
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