ntal Microbiology Exam 3 Spring 2018 (100 pts) 43. Rhodopseudomonas palustris ha
ID: 3164479 • Letter: N
Question
ntal Microbiology Exam 3 Spring 2018 (100 pts) 43. Rhodopseudomonas palustris has many potential important uses in industry due to its ability A. degrade chlorinated aromatie compounds prodtuce h arbon compound thait C. produce a carbo D. fixes nitrogen; E. All of the above are truce n compound that can be used to make bioplastics; 44. Species in this genus of the Deltaproteobacteria form aggregates and kill their bactenial prey with extracellular digestive enzymes A. Myxobacteria, B. Bacteriodetes; C. Melanobacteria; D. Shewanella 45. As much as Bacteroides. A.0.1%; B, 2.0%; C. 30 %; D. 90 % of the bacteria isolated from human feces belong to the genus 46. Members of the genus Rhizobium: A. are photoautotrophs B. are free living soil bacteria that fix nitrogen. C. grow symbiotically in root nodules of leguminous plants where they fix nitrogen. D. are important nitrifying bacteria that convert nitrite to nitrate. 47. The purple nonsulfur bacteria: A. grow anacrobically as photoorganoheterotrophs. 3. utilize organic molecules as a source of electrons for photosynthesis. C. typically can grow acrobically in the dark as chemoorganoheterotrophs. D. All of the choices are correct. 48. Methylotrophic bacteria: A. are strict anaerobes. B. use reduced one-carbon compounds as their main source of carbon. C. are members of the Archaea based on 16S rRNA sequencing. D. produce methane as a by-product of their metabolism. 49. The genus Bdellovibrio A. form long filaments called trichomes. B. prey on gram negative bacteria by becoming an intracellular parasite. C. use reduced sulfur compounds as a source of energy. D. are responsible for causing diarrhea in humans. 50. Which group has several species that store excess carbon as poly-B-hydorxybutyrate (PHB)? A. Green sulfur bacteria; B. Purple nonsulfur bacteria; C. Green nonsulfur bacteria; D. Ammonia oxidizing archaea; E. HalobacteriaExplanation / Answer
43. E. All of the above. Rhodopseudomonas bacteria are purple nonsulfur phototrophic organisms that can fix energy using sunlight, utilize several compound such as potassium nitrate, or sodium nitrite, can be used for waste disposal and energy production.
44. A. Myxobacteriaform aggregates that allows accumulation of the enzymes is used to digest food/prey.
45. C. 30%. They are the single most-dominant bacteria in the gut micro-biome.
46. C. Gram-negative soil bacteria and are endosymbiotic in nature and fix nitrogen in association with plant roots of legumes
47. D. These are mostly photoautotrophic, but can be chemoautotrophic and photoheterotrophic. Notably, they can behave as mixotrophs, and perform both aerobic respiration and fermentation
48. B. capable of assimilating one-carbon compounds through carbon dioxide using the ribulose bisphosphate pathway
49. B. Bdellovibrio prey on other Gram-negative bacteria and can reside in the periplast.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.