in neutral pH. To do this the experiment was carried out so that tubes containing a reaction solution of the Amylase enzyme and starch were simultaneously mixed. The reactions were then introduced to I2-KI‚ which stopped the reactions‚ at two minute intervals. Each of these trials was repeated three times to ensure proper accuracy. After concluding the reactions they were placed into a spectrophotometer (A580) for analysis. Graphing the values of the absorbance to time for each pH it was found
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different pHs Abstract The body uses natural buffers to maintain the many different pH environments in our body. This is important for optimum activity of our enzymes. When doing experiments in vitro using these enzymes it is important to mimic intracellular conditions using artificial buffer systems in order to obtain accurate results. In this experiment the buffering properties of three artificial buffer systems containing acetic acid‚ Gylcine and Tris were investigated. Overall the pKa values obtained
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psychology and public health approaches to social problems. It is imperative however to first explain what these two concepts mean before executing on how they compare and differ from each other. It would also be of significance to know how these concepts where established. Definitions Community psychology is that branch of psychology concerned with how people relate to community and society‚ and according to this approach there are multiple levels in which individuals connect to the community and
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HOW TO BE MORE CONFIDENT Confidence can be termed as the assurance in a task‚ person or thing. But this single sentence is surely very much negligible to clear the idea of confidence before you. So‚ it can be said when you are planning to do anything but having a doubt about whether you will be successful in doing that or not‚ then you are said to lack confidence. Confidence is something which is a basic necessity in each and every human being and without which it is not possible for a person to
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Title: Enzyme Activity Aim: To investigate the activity of the enzyme catalase in liver and potatoes‚ and to investigate the effect of temperature‚ surface area‚ pH and certain chemicals on the activity of catalase. Equipment: Dilute hydrochloric acid solution x 1ml 10 volume hydrogen peroxide x 100ml Copper sulphate solution x 1ml Aluminum nitrate solution x 1ml Zinc nitrate solution x 1ml dilute NaOH solution x 1ml Mortar and pestle x 1 25ml Beaker x 1 Hot plate x1
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the tube with the highest concentration of yeast will produce the most carbon dioxide and will have the fastest rate of alcoholic fermentation. Results Two separate experiments were conducted to determine the effect of yeast concentration and pH level on the rate of fermentation. The first experiment involved the placement of different concentrations of yeast‚ glucose‚ and distilled water in four different tubes. Pipette pumps were placed on each tube to allow the solution to ferment
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Sonia St James Investigation: Factors that affect the outcome of enzyme activity Introduction In this project I will monitor the rate of activity of Catalase. Catalase is an Enzyme which in the right conditions catalyses the decomposition of Hydrogen Peroxide into water and oxygen; 2H2O2 + Catalase >>> 2H2O + O2 Catalase is found in all cells and protects them from Hydrogen Peroxide which is a dangerous waste product that needs to be eliminated. Without Catalase living things could not survive
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September 20‚ 2010 EXPERIMENT Acids‚ Bases‚ and Neutrals Problem Are common house-hold products pHs balanced and neutral? Information pH measures how acidic or alkaline a solution is. Its concept was introduced in 1909 by biochemist Soren Sorensen. The scale ranges from 0-14. Solutions that range from 0 to 6 are considered to be Acidic. Solution that’s on the Acidic end of the scale is low in ph‚ high in hydrogen ion‚ and low in hydroxyl ions. An acid have a sour taste‚ reacts with metal‚ are
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EFFECT OF TEMPERATURE‚PH AND SUBSTRATE CONCENTRATION ON ENZYME ACTIVITY | Aim To investigate the effect of Temperature‚Ph and substrate concentration on the rate of enzyme activity. Hypothesis
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Primary and Support Activities of Value Chain. Introduction Raytheon Company has created new software that improves the logistics system of the company by providing constant tracking data of all products in the inventory‚ which has saved the company nearly $9M. MTrak is a web-based system that includes the Microsoft .Net technology‚ which is used to capture bar-code scans and combines it with information from the mainframe computer to provide tracking of all inventories anywhere within the
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