| Term | Definition |
|---|
| cation | _____-selective membrane - essential to prevent oxygen diffusion from the cathode chamber (where it is essential) to the anode chamber, where it will prevent anaerobic respiration by electrigens |
| anode | sum rxn involves proton production at the ____ |
| cathode | sun rxn involves proton consumption at the ____ |
| protons | _____ move from anode to cathode |
| ssu | in order to identify organisms associated with an anode in fresh water sediment, authors used amplifying, cloning, and sequencing of ___ rRNA genes |
| extracellular | electricigens need to be able to transfer electrons to an _______ anode |
| insoluble | metal reducers must be able to transfer electrons to an _______ electron acceptor, such as ferric oxide |
| metal | probably metal reducers have evolved mechanisms to make ___ available as electron acceptors, which permits electron transfer to an anode |
| shuttle | _____ compounds - cell reduces these which reduce the iron |
| nanowire | ______ - conductive pili, cell can send electrons to ferric iron |
| chelator | ______ - brings ferric iron to cell |
| direct | _____ contact - cell goes to ferric iron |
| PCE | D. ethenogenes degrades ___ and TCE |
| ethene | D. ethenogenes degrades very ubiquitous pollutants to a non-toxic product, _____, unlike other organisms that form highly-carcinogenic vinyl chloride |
| H2 | D. ethenogenes is known to use only __ as an electron donor |
| chlorinated | D. ethenogenes is known to use only ______ organic compounds as electron acceptors |
| specialist | the very narrow substrate range of D. ethenogenes suggests the organism is a _____ with a very narrowly defined niche, oxidizing H2 and reducing a range of chlorinated compounds |
| corrinoid | ______ - an essential cofactor in reductive dehalogenases |
| unable | D. ethenogenes is ____ (able/unable) to synthesize corrinoid cofactors |
| periplasmic | Hup hydrogenase is _____, so if it oxidizes hydrogen, hydrogen produced would be in the periplasm contributing to PMF of cell. |
| specialized | the large number of reductive dehalogenase genes indicates that redctive dehalogenation is a key process for this organism, and supports the idea that it is highly _____ to occupy niches as a hydrogen-oxidizing, dechlorinating organism |
| horizontal | the acquisition of the RD genes seems to have been by ______ gene transfer and duplication, expanding the ability of the organism to use multiple halogenated substrates as electron acceptors |
| dehalorespiration | the analysis of D. ethenogenes does not identify other modes of growth other than _________ |
| humans | the only known subtrates appears to only be common where _____ have put them |
| recently | the genome of D. ethenogenes appears to have multiple ______-acquired reductive dehalogenases, consistent with recent selection for dehalorespiration |
| efficient | energy conservation does not appear to be _____, which is consistent with a respiratory mechanism that has not had a long evolutionary history permitting its optimization |
Combine with other sets
Share on Facebook
Share on MySpace