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15 Cards in this Set
- Front
- Back
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The most ancient phylum from a phylogenetic standpoint contains the genus
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Aquifex
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What is the organism that led Winogradsky to formulate the concept of chemolithotrophy?
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Beggiotoa
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• During nitrification, _______________enzyme oxidizes ammonia to hydroxylamine and _________ oxidizes nitrite to nitrate.
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ammonia monooxygenase
nitrite oxidase |
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• Methanotrophs mainly oxidize _______ and possess a specific enzyme, ___________
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methane
methane monooxygenase |
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• Azotobacter forms resting structures called ____ and the structures are _______________ and ______________
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cysts
not heat-resistant and not completely dormant |
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____________ is the name of the genus of gram-positive rod-shaped bacteria used in the production of diary products.
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• Lactobacillus
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• Mycolic acid is a characteristic of the genus
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Mycobacterium
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• The manufacture of the Swiss cheese requires an initial fermentation of lactose to lactic acid by _________ organisms.
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homofermentive
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• The actinomycetes and some cyanobacteria causes earthy odor of soil by the production of a metabolite called ______
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geosmin.
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• __________ (bacteria) grow very well in urinated soils
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Sporosarcina ureae
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• ________ Archae produces methane as part of their energy metabolism.
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Methanogenic
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• Euryarchaeotes whose optimal growth temperature is over 80°C are called _________
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hyperthermophiles.
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• What is the minimum molar concentration of sodium chloride that an extreme halophile requires for growth?
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1.5 M
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• Hot, generally acidic, sulfur-rich environments are called
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solfataras
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• ___________ and _________ are types of rhodopsin found in extreme halophilic Archae.
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Bacteriorhodopsin, halorhodopsin, and sensory rhodopsin
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