Purpose of today’s experiment: To determine the effect osmotic pressure might have on cellular membranes‚ specifically when beet slices are placed in NaCl solutions of varying concentrations. 2. Hypothesis: The osmolarity will directly increase with increasing NaCl concentrations. 3. Control = Distilled Water – this was present in all solutions 4. The independent variable – salinity of the 6 solutions; while predetermined‚ the NaCl concentrations varied from 0% to 15%. The dependent variable
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are looking into is ethanol or CH3CH2OH which is the chemical make up of ethanol. Ethanol is a clear colorless liquid that at low levels has a sweet taste‚ but at levels needed for fuel use it has a burning taste. Since 1990‚ when the government decided that gasoline burned had unsafe levels of carbon monoxide‚ ethanol has been added to gasoline in order to make it a higher octane level‚ burn cleaner‚ and to over all improve the emissions of gasoline. In order for an ethanol mixture to be considered
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Ethanol: Good or Bad? In the pursuit of a cleaner renewable resource to fossil fuels‚ many scientist have found alternatives. Examples include solar‚ wind‚ biogas‚ geothermal‚ biomass energy and cellulosic ethanol. In the last twenty years‚ efforts have been made to reduce our dependency on foreign oil and ethanol has been an option. Ethanol is nothing new; in fact‚ it was first used in a motor built by Samuel Morey in 1826 (Ethanol History). Since the 1980s‚ the government started having oil companies
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Although ethanol has provided our world with many benefits‚ there are also many drawbacks as well. Because ethanol is manufactured from corn crops‚ the value of most corn is higher in costs. This drawback plays a role not only in the world of energy but also in the food industry‚ thus overall impacting our economy. In addition‚ the corn also requires a large quantity of land in order to produce enough material for the ethanol. Farm land is very scarce and difficult to come by‚ because of the constant
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The plasma membrane is a fluid phospholipid bilayer. The outside of the bilayer is hydrophilic portions of porteins and phospholipids because they are exposed to water. This results in a stable membrane structure. Inside the bilayer hydrophobic portions of proteins and phospholipids because the inside of the bilayer is nonaqueous. the proteins bob in the fluid bilayer of phospholipids. The proteins also vary in structure and function. There are teh integral proteins; transmembrane
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An investigation into the effects of sugar concentration on yeast activity Introduction: Yeasts are eukaryotic micro organisms belonging to the kingdom fungi. Yeasts live on sugars and produce ethanol and carbon dioxide as by-products. [James Mallory‚ 1984]When Yeasts are given water and sucrose they convert the sucrose into glucose then convert the glucose into carbon dioxide and ethanol following the following reaction: C₆H₁₂O₆ ( 2(C₂H₅OH + CO₂ [Brady Burkhart‚ Terrell Grayson and Eric Kimler
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Analysis of Ethanol in Moonshine | Using the GC-MS | Jennifer Greene | ------------------------------------------------- 4 May 2012 ------------------------------------------------- 4 May 2012 Introduction: In this experiment gas chromatography is applied to separate the water-ethanol mixture. This method is often used in the determination of alcohol in blood or urine. One obvious application is when law enforcement agencies need to determine whether or not someone is inebriated
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experiments will be conducted to evaluate ethanol as a fuel‚ the experiments are Fermentation and Calorimetry. Fermentation will find the best combination of sugar and yeast for optimum ethanol production and the Calorimetry experiments test ethanol against other alcohols and fuels to see how it matches up in terms of energy production. Fermentation shows glucose and baker’s yeast as the fastest producers of ethanol and the calorimetry proves that ethanol and other alcohols produce more heat energy
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of the cell membrane with the correct terms integral proteins‚ channel proteins and bilipid construction. Your last paragraph was very detailed with great information about the cell membrane‚ you stated “ The cell membrane is very thin and fragile‚ and it contains two different types of proteins. “Integral proteins are part of the membrane structure and cannot be removed without damaging or destroying the membrane. Peripheral proteins are bound to the inner or outer surface of the membrane and are
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liquid permeability of porous media. The apparatus used in the experiment is the liquid permeameter. The liquid used in this experiment is water. Three membrane samples of different thickness (0.1‚ 0.2‚ 0.3 cm) are used as the porous media. The determination of the permeability is carried out using elevated pressure test. Each sample is tested for 5 times at different values of pressure gradient which are 5‚ 10‚ 15‚ 20 and 30 psi. In order to obtain more accurate data‚ ensure that the membrane samples
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