Yeasts’ capability of undergoing ethanol fermentation‚ its ability to ferment other sugars and artificial sweeteners‚ and how lactase influences yeasts ability to use lactose as a food source Kristina Naydenova Father Michael Goetz Purpose Part A: To investigate whether yeast has the ability to ferment glucose to produce carbon dioxide gas and ethanol. Part B: To investigate whether yeast has the ability to ferment other sugars and artificial sweeteners and how lactase influences their
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Cell injury In this topic we are going to cover Cell injury Causes of cell injury Mechanism of cell injury Morphologic alterations in cell injury Morphologic types of necrosis Objectives Describe cell injury List the causes of cell injury Discuss how depletion of ATP causes cell injury Describe how mitochondrial damage cause cell injury Explain the mechanism of cell injury by free radicals Discuss how calcium ion influx cause cell injury Cell injury cell injury results when cells
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dimethyl acetylene-dicarboxylate (0.1mL)‚ and nitrobenzene (1mL) was placed into a reaction tube with a boiling stick. The reaction was heated until the purple solution turns tan and refluxed. Ethanol(3mL) was stirred in after the solution was warm‚ and placed in ice. The solid was vacuum filtered‚ washed with ethanol‚ dried and weighed. Hexaphenylbenzene. Tetraphenylcyclopentadienone (0.100g) and diphenylacetylene (500mg) was placed in a reaction tube and loosely capped. The solid was heated to reflux
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http://http://www.consumerreports.org/cro/2011/05/pros-and-cons-a-reality-check-on- alternative-fuels/index.htm West‚ Brian H.‚ Alberto J. Lopez‚ Timothy J. Theiss‚ Ronald L. Graves‚ John M. Storey‚ and Samuel A. Lewis. 2007. Fuel Economy and Emissions of the Ethanol-Optimized Saab 9- 5 Biopower. SAE Technical Paper 2007-01-3994. (Placeholder1)
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the products of aerobic and anaerobic respiration are present | |Includes: |in the flasks. The tests detect the presence of carbon dioxide and ethanol. Carbon dioxide should be | |Background information and purpose of the|present irrespective of the type of respiration taking place‚ but ethanol is present only if | |experiment |fermentation has
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Fermentation of Carbohydrates: Ethanol from Sucrose Objective: To demonstrate a fermentation process‚ isolate the ethanol produced by fractional distillation‚ determine the composition of the ethanol solution recovered‚ and make stoichiometric and yield calculations. Procedures: Fermentation Weigh out 20.0 g of sucrose and place it into a 250-mL Erlenmeyer flask. Add 100 mL of water and gently shake until all the sucrose has dissolved. To this solution add 0.60 g of dipotassium hydrogen phosphate
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being poured in ethanol: Ice cube in ethanol The ice cube floated Ice cube in water The ice cube sank Station #2 Cohesive properties of Water Observations on waters cohesive properties using a paper clip and a coin: Paper clip The paper clip stayed on top for a few seconds then it sank Coin We were able to place 12 drops of water before it overflowed‚ Station #3 Water as a solvent Observations when oil‚ food colorants‚ sugar and salt is poured into water ethanol or both and stirred:
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After the addition of the ethanol‚ the DNA should precipitate as a spongy material that will wrap onto a glass rod. Lastly‚ the DNA on the glass rod was put in a test tube and placed in an 85° water bath5. The tissue used for the isolation of plant chromatin was raspberries. Two
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(see list of additives in cigarettes). Ethyl acetate is the ester of ethanol and acetic acid; it is manufactured on a large scale for use as a solvent. The combined annual production in 1985 of Japan‚ North America‚ and Europe was about 400‚000 tons.[1] In 2004‚ an estimated 1.3M tons were produced worldwide.[2] Production Ethyl acetate is synthesized in industry mainly via the classic Fischer esterification reaction of ethanol and acetic acid. This mixture converts to the ester in about 65% yield
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generated. Include the characteristics of the phospholipid bilayer‚ leak membrane channels and the diffusion of K+ ions‚ and the role of the Na+/K+ ATPase pump. Explain how and why increasing the permeability of the membrane to Na+ ions will affect the membrane potential. Describe the how changing the permeability of the membrane at one location in a cell can produce a localised change in membrane potential‚ which in turn can spread over short-distances within that cell. General Introduction. The
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