Evaluation/ Comparison Introduction I will be writing an in-depth report to evaluate the effectiveness of business information and its communication as the key contributors to the success of the Vodafone organisation‚ the Building Societies Association (BSA) and McDonald’s restaurants to illustrate my points and draw some type of comparison between the effectiveness of the information used in the three organisations. Vodafone Organisation Communication Vodafone’s Business Principles are the foundation
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Introduction: The purpose of this lab was to learn how to use a spectrophotometer to measure the amount of light absorbed by different concentrations of salicylic acid‚ compare those concentrations to our unknown sample and to use the data collected to compile a graph showing the levels of absorbance of the different concentrations. Methods and materials: In this lab we used a spectrophotometer‚ a test tube filled with water to be used as a blank‚ six test tubes with different concentrations
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containing deionized water. After 20 minutes in these diffusion solutions‚ we took the beets out with a dissecting needle and discard it. We then stirred each solution in the test tube with a stirring rod‚ and transferred it to a cuvette. A spectrophotometer was then calibrated‚ and used to measure the absorbance of each exposure solution‚ and diffusion solution. Membrane Damage For the lab experiment for Membrane Damage‚ we tested the extract pigment and diluted it. When the pH solutions are
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Introduction In this experiment‚ the gram negative bacterium Escherichia coli is being subjected to various environmental factors that affect the rate of growth. These factors scrutinized were the different types of nutrients‚ the intensity of aeration‚ or the temperature at which it was stored. The purpose of this lab is to determine which factor affects the Escherichia coli the greatest. It is known that these abiotic factors affect the rate of growth the greatest if they remain at the correct
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recognizable amount of cellular destruction possible as a result in this change of environment. Tested were different samples of mammalian red blood cells (RBC) which were microscopically analyzed and measured for absorbency rates with a spectrophotometer when introduced to the various solute concentrations of 0.6% salt (Na)‚ 0.897% Na‚ 5.0% Na‚ and distilled water with a 0.0% Na solute concentration. My hypothesis is that cellular form and contents will either change or maintain form and consistency
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AP Biology Lab Four: Plant Pigments and Photosynthesis Abstract: The purpose of this lab is to separate and identify pigments and other molecules within plant cells by a process called chromatography. We will also be measuring the rate of photosynthesis in isolated chloroplasts. Beta carotene‚ the most abundant carotene in plants‚ is carried along near the solvent front because it is very soluble in the solvent being used and because it forms no hydrogen bonds with cellulose. Xanthophyll is found
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Abstract This experiment is to study and measure the enzyme activity of β-galactosidase in the different concentrations of o-Nitrophenylgalactoside (ONPG) using a spectrophotometer. The spectrophotometer was also set at 420nm‚ a wavelength which is best for recording the absorbance values for the experiment. From the results‚ 0.9mM ONPG solution has the highest absorbance and 0.1mM ONPG solution has the least. Also‚ 0.5mM ONPG solution has the highest rate of enzyme activity and it is the most efficient
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CARY60-UV-Vis Spectrophotometer was then employed to determine the optimum wavelength in the visible spectrum of the ionic Iron and FerroZine® complex. 1.2: Calibration Curve of ionic Iron and FerroZine® complex
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find the unknown concentration. The lab included the use of a volumetric flask‚ pipette‚ and spectrophotometer. The spectrophotometer played the biggest part in finding the concentration of the unknown. A spectrophotometer is an apparatus for measuring the intensity of light in a part of the spectrum‚ and is transmitted or emitted on a particular substance. After the number retrieved from the spectrophotometer Beer’s law was used to get the absorbance. The formula was 2-log (% T). This is used in life
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Through Chloroplasts Introduction: 1)Background= 2) Purpose= measure the rate of photosynthesis in chloroplasts. 3) The chloroplast will be subjected to two experimental conditions- light‚ and the absence of light‚ using a spectrophotometer to determine the amount of DPIP reduced at specific time intervals under each condition. 4) I predict the amount of DPIP reduced will vary for each condition and increase over the time intervals. I hypothesize under the light condition the
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