Videos
Describe a key physiological feature of the following Bacteria that would differentiate each from the others: Acetobacter, Methylococcus, Azotobacter, Photobacterium, Desulfovibrio, and spirillum.
To explain:
A key physiological feature that is present in the following bacteria that would differentiate them from each other: Acetobacter, Methylococcus, Azotobacter, Photobacterium, Desulfovibrio, and Spirillum.
Introduction:
Bacteria that are able to convert ethanol to acetic acid are classified under the genus of Acetobacter. Desulfovibrio contains gram-negative sulfate reducers. The genus Methylococcus contains gram-negative cocci. Photobacterium belongs to the genus of Vibrionaceae are gram-negative bacteria.
Explanation of Solution
A key physiological feature that is present in all the given genus of bacteria that would differentiate each from the other is their oxygen requirement. These geneses also differ in their metabolism.
Acetic acid bacteria are economically important as they are employed in the production of vinegar. Firstly, ethanol is converted into wine which in turn is converted into acetic acid that results in the production of vinegar. These bacteria are obligate aerobes that are also used in the production of vitamin C. Oxidize acetate completely to carbon dioxide by complete citric acid cycle.
Methylococcus are obligately methanotrophic in nature. These bacteria are involved in the oxidation of methane that is produced biologically. Therefore, these bacteria play a major role in decreasing the effect of a greenhouse gas-methane. This genus includes methanotrophic bacteria that carry out an incomplete citric acid cycle.
Azotobacter is a genus that contains free living, motile diazotrophs. These bacteria form a resting structure known as cyst. Azotobacter is used as a bio-fertilizer during the cultivation of crops. These aerobic bacteria fixes the atmospheric nitrogen by the use of nitrogenase enzyme.
Photobacterium are facultative aerobes. These bacteria possess bioluminescent property. The light emitting property of such organisms is termed as bioluminescence. The gene which is responsible for this property is lux CDABE. The phenomenon of bioluminescence is catalyzed by the enzyme luciferase.
Desulfovibrio are anaerobic, gram-negative sulfate reducing bacteria. These bacteria utilize anoxygenic lactate-sulfate medium that contains ferrous iron. These bacteria are particularly noted as there are capable of producing methyl mercury. This compound can cause health defects in human (cardiovascular diseases) and children.
Spirillum is a genus of microaerophilic bacteria. They are gram-negative and motile by polar flagella. These bacteria are spiral in shape and possess a rigid structure. These bacteria are the causative agents of rat-bite fever.
Want to see more full solutions like this?
Chapter 15 Solutions
EBK BROCK BIOLOGY OF MICROORGANISMS
- How is a protein destined for the Endoplasmic Reticulum (ER), imported into the ER? Be concise.arrow_forwardFind out about the organisations and the movements aimed at the conservation of our natural resources. Eg Chipko movement and Greenpeace. Make a project report on such an organisation.arrow_forwardWhat are biofertilizers and mention the significancearrow_forward
- PCBs and River Otters: Otters in Washington State’s Green-Duwamish River have high levels of polychlorinated biphenyls (PCBs) in their livers. PCBs can bind to the estrogen receptors in animals and disrupt the endocrine system of these otters. The PCBs seem to increase the estrogen to androgen ratio, skewing the ratio toward too much estrogen. How would increased estrogen affect the river otter population? Based on your reading of the materials in this unit, what factors can affect fertility in humans? Explain how each of the factors affecting human fertility that you described can disrupt the human endocrine system to affect reproduction.arrow_forwardOther than oil and alcohol, are there other liquids you could compare to water (that are liquid at room temperature)? How is water unique compared to these other liquids? What follow-up experiment would you like to do, and how would you relate it to your life?arrow_forwardSelection of Traits What adaptations do scavengers have for locating and feeding on prey? What adaptations do predators have for capturing and consuming prey?arrow_forward
- Competition Between Species What natural processes limit populations from growing too large? What are some resources organisms can compete over in their natural habitat?arrow_forwardSpecies Interactions Explain how predators, prey and scavengers interact. Explain whether predators and scavengers are necessary or beneficial for an ecosystem.arrow_forwardmagine that you are conducting research on fruit type and seed dispersal. You submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Describe two characteristics that you would expect in seeds that are dispersed by the wind. Contrast this with what you would expect for seeds that are gathered, buried or eaten by animals, and explain why they are different. (Editor’s note: Providing this information in your discussion will help readers to consider the significance of the research).arrow_forward
Principles Of Radiographic Imaging: An Art And A ...Health & NutritionISBN:9781337711067Author:Richard R. Carlton, Arlene M. Adler, Vesna BalacPublisher:Cengage Learning
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning