The effect of environmental factors such as temperature‚ osmotic pressure‚ oxygen concentration and pH on microbial growth and survival Abstract: Microbial growth can be affected by different environmental factors such as temperature‚ osmotic pressure‚ oxygen concentration and pH. Six experiments were carried out in this report testing for microbial growth against different environmental factors. Good aseptic techniques were used to prevent contamination‚ resulting in a uniform set of results
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Introduction: The purpose of this lab was to check the time needed for salivary amylase and phosphorylase to produce a negative result and how different concentrations affected those times. Enzymes are biological catalysts that can cause a specific chemical change in any part of the body (Walsh‚ 2002). Many of the reactions that take place within a cell would normally take place at temperatures substantially higher than those present inside a cell (Alberts et al.‚ 2010). Because of this‚ these chemical
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Creating efficient frontiers using excel. Suppose we have 3 risky assets whose net return has the mean vector and variancecovariance matrix given below: Asset Mean VarianceCovariance Matrix 1 2 3 0.06 0.12 0.03 1 0.3 0.3 0.3 1 0.3 0.3 0.3 1 Weights Ones Mean Portfolio Return 1 1 1 0.176666122 Portfolio Portfolio Portfolio Variance STD Constraint 2.42961 1.558721 1 0.079372 1.603166 -0.68254 To model the portfolio choice problem‚ I begin by highlighting the mean vector and giving
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experiment‚ there will be an optimal point for each factor. I believe that the optimal temperature for the enzyme sucrase will be 37°C because that is the point where the temperature increases the rate of reaction to its greatest point without denaturing it. For the pH test‚ I think that the optimal pH for sucrase will be the pH of 7 because it is neutral so it won’t affect the charge in a negative or positive way. For the denaturation test‚ I think that the optimal treatment for the enzyme is when
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Optimal conditions for a transfection essay A study on the effects of variations in transfection conditions on Rat-2 cells 19-2-2010 LUMC BW3 Marjolein Surstedt (m.surstedt@u-mail.leidenuniv.nl) 0743259 Ewoud Ewing Abstract The behavior of a proto-oncogene mutated into an oncogene can be studied in vitro by means of transfection. The success of a transfection essay depends on various conditions. In the experiment the influence of various transfection conditions were
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OPTIMAL CAPITAL STRUCTURE The optimal capital structure for a company should be the mix of equity‚ debt and hybrid instruments that minimizes the overall cost of funding‚ i.e. it should minimize the company’s weighted average cost of capital. In practice‚ however‚ it is not possible to specify this optimal capital structure exactly‚ for any individual company. It clearly makes sense to obtain funds at the lowest possible cost. In the long run‚ debt is cheaper than equity. However‚ when a company’s
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is the decision making process for Metabical? 1. Who is involved in the decision making process? What is the decision making process for Metabical? 2. How should Printup think about the segmentation of potential Metabical consumers?Who is the optimal target consumer? 3. How should CSP identify and employ the differential advantages that Metabical offers to position itself in the marketplace? 4. Given the position strategy you chose‚ what would be your communications strategy to eachof your target
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Starch/Amylase Experiment Report Objective: The purpose of the starch/amylase experiment was to simulate and observe the process of enzyme digestion. Materials: * 1 small beaker * 2 large beakers * 2 cut pieces of soaked dialysis tubing * 2 dialysis tubing clamps or pieces of twine * 2 clean plastic pipettes * 1 bottle of Lugol’s solution * 2 glucose test strips Procedure: Begin the experiment by placing 4 full pipettes worth of cooked starch in a beaker. Then‚ use
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Title: pH and buffer solutions Aim This experiment was carried out to determine the role of buffer solution and the factor which affect the buffer capacity. Besides‚ this experiment was carried out to investigate the solubility of protein casein over a range of pH concentration. This experiment also was carried out to determine the isoelectric point of the casein and the effect of the isoelectric point toward the casein solution. Methods Verification of the Henderson-Hasselbalch equation
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Pancreatic Amylase Statement of the Problem: What happens to enzymes when they are boiled? If digestion doesn’t occur‚ which will be present starch or maltose? If digestion does occur‚ which will be present starch or maltose? Hypothesis: I predict that when enzymes are boiled‚ they will become larger. If digestion does not occur starch will be present‚ and if it does occur maltose will be present. Materials: Test Tube Boiling Water Starch Suspension Pancreatic Amylase Solution
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