Transpiration Formal Lab Report By Jessica Tran Introduction When water is transported from the roots to the mesophyll cells in the leaves‚ it is evaporates out the stomates‚ called transpiration‚ to create a lower osmotic potential. Osmotic potential is the part of the water potential of a tissue that results from the presence of solute particles. Even though the stomates open to release water‚ it also brings in carbon dioxide to produce sugar and oxygen through a process of photosynthesis
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The objective of this macromolecules lab was to identify the presence any of the major macromolecules in various every day food items. The three macromolecules that this lab was carried out for were carbohydrates‚ lipids‚ and proteins. There were five different experiments conducted and each of those experiments had one factor in common‚ they all had the same controls. The controls in this lab activity were already set for the lab activity. The controls were the distilled water and the baking soda
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performed using different concentrations of elution solution and the column is eluted in increasing order of polarity of solvent from 100 % of extract‚ 25 % of ethyl acetate in hexane‚ 50 % of ethyl acetate in hexane‚ 75 % of ethyl acetate in hexane and 100 % of ethyl acetate. Then the polarity was increased using 2 % Methanol in Ethyl acetate to 50 % Methanol in ethyl acetate. 8 % of methanol and 92 % of ethyl acetate concentration was found to be the best concentration and after concentrating all
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the Beers Law Plot. Beers Law shows that there is a relationship between absorption and concentration so the x value on the Beers Law Plot will be the concentration of the 6 diluted iron solutions. To calculate the concentration‚ the equation is M1V1=M2V2 solving for the final molarity. Then the
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Titration Lab Introduction The purpose of this lab is reach and be able to calculate the equivalence point when we use titration to neutralize a base with acid. The process of the lab was determining the volume of a solution needed to react with a given mass or volume of a sample is called titration. The equivalence point is when the same number of moles of acid and moles of base has been added. Phenolphthalein is used as an indicator because it will have a color change when the equivalence point
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In order to fully understand the concept of this experiment‚ one must first be introduced to diffusion. Diffusion is a spontaneous process by which molecule particles move from one area that is highly concentrated to another area in which its concentration is lower. Cells contain fluids and are surrounded by fluids; in order for a cell to function it is required to be in a balanced state. The progress in which a cell is in its balanced state is called equilibrium. Diffusion is a functioning way for
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"18. Dehydration of 2- Methylcyclohexanol." Organic Chemistry Lab 2040L. XU Chemistry‚ n.d. Web. 12 Feb. 2013. 2. "Material Safety Data Sheet 2-Methylcyclohexanol." Http://www.coleparmer.com/Assets/Msds/97403.htm. Coleparmer‚ 19 Mar. 1998. Web. 12 Feb. 2013. 3. "Material Safety Data Sheet Methylcyclohexane." Sciencelab.com. Science Lab‚ 09 Oct. 2005. Web. 12 Feb. 2013. 4. Helmenstine‚ Anne M.‚ Ph.D. "How to Write a Lab Report." About.com Chemistry. About.com Guide‚ n.d. Web. 23 Feb. 2013
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reactants and products. Throughout this process‚ water-soluble vitamins act as coenzymes to help catalyze chemical reactions. Hence‚ enzymes react by compressing the activation energy‚ thereby
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top to bottom instead of measuring the exact distance traveled by the filter paper‚ making the test results not plausible. The results of this lab proved several things. The results of the first test show that a higher enzyme concentration causes a faster rate of the substrate being broken down. This means that the effect of enzyme concentration on enzyme activity is a positive effect and speeds up enzyme activity. The reason that the results turned out as they did is because with more enzymes
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This lab has brought great interest to me because this is the way physicians’ control/treat infectious disease within our bodies. In this lab‚ chemotherapeutic agents were evaluated by the disk-diffusion method. Chemotherapeutic agents are placed on the surface of a Petri plate containing Mueller-Hinton agar‚ which allows the agents to diffuse freely‚ and a growth medium is incubated over its’ surface. During incubation‚ the chemotherapeutic agents move from levels of high concentration‚ to low
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