fermentation rate and increased production of CO2. Introduction: Fermentation is the break down of organic matter‚ by microorganism‚ in the absence of oxygen also known as anaerobic (Van Neil‚ 2008). Our reactions occurs when yeasts is added to a solution of glucose and water. Fermentation starts with a process called glycolysis. In glycolysis Glucose is broken down into two molecules of pyruvate and a net yield of 2 NADH (electron carrier) and 2 ATP (adenosine triphosphate) molecules. The first step
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General Biology I‚ Fall 2011 Lab Report 3 Name: Luan Nguyen Date: 11-30-11 Lab: Gel Electrophoresis Purpose of this lab: In this laboratory investigation‚ students will analyze hypothetical human DNA using restriction endonucleases and gel electrophoresis to match samples from a crime scene to a suspect. Introduction: Your analysis unit will use gel electrophoresis to determine the guilty party. Electrophoresis is a technology in science that allows an individual to separate
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Abstract: Bacteria consists of a large domain of prokaryotic microorganism in which can fight of antibiotics allowing the bacteria to become antibiotic resistant. In this lab report‚ we discover the most effective disinfectant that would work best in killing the harmful bacterial strain‚ Bacillus subtilis. KB testing or disc diffusion antibiotic sensitivity testing is measured through the diameter in millimeters to find how resistant the antibiotic to the bacteria. The hypothesis of Windex fell correctly
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Anxiety Lab Report Abstract: The aim of this study is to investigate the relationship between cognitive anxiety‚ somatic anxiety and self confidence in two different situations; non-stressful and stressful. It is to examine the effects on anxiety of a simple golf putting task. The stressor used in this experiment can be described as situational‚ namely the stressor of social comparison‚ the type of stressor that leads many performers to question their own ability which in turn evokes symptoms
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although not tested in this lab‚ would be easy to pick out since it most likely does not give off a pink or purple flame as lithium sulfate and potassium sulfate do‚ respectively. 3. Using the results of this lab‚ explain how one could easily relable these three bottles. (Tell me exactly how you would know what was in each. Write answers in the space next to each compound.) We can conclude and compare the colors each substance gives off to the known solutions and choose the similar color
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Be sure to stir the mixture for 2 minutes after adding sodium thiosulfate. Repeat the potassium iodide-starch test to make sure that there are no oxidize agent left in the mixture. Once done‚ the mixture will be tested for it pH level. If the mixture is too acidic‚ then add sodium bicarbonate‚ as necessary‚ to reduce acidity. In the next step‚ add enough sodium chloride so that a small amount will remain after stirring. This will decrease the solubility of
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Ph Lab Report Bryon Kim 123013 B(2) Biology Background information/Research PH paper (litmus paper) determines how acidic or how basic a substance is. The paper changes color accordingly to color code on the pH scale. The pH scale starts from 0 to 14. The lower the number the more acidic it is. Zero is the most acidic‚ and 14 is the most basic while 7 is the neutral number for example water. Examples of an acid is lemon juice or multi purpose cleaner. Examples of a basic substance is shampoo or liquid soap
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Practical 12: Digestion in Humans Aim: To distinguish between 5 liquids to come to a conclusion from which region of the alimentary canal it was extracted from. Hypothesis In this practical‚ we have been given 5 unknown solutions hence it is not possible for us without any logical analysis to come up with a conclusion regarding the positioning along the alimentary canal. We cannot come up with a proper answer or predict results without running through the tests. I though can base my
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Title: Preparation and isolation of an Ester Aim: To make an ester and purify it Background Theory: Esters are derived from carboxylic acids and alcohols with the presence of a catalyst. A carboxylic acid contains the -COOH group‚ and in an ester the hydrogen in this group is replaced by a hydrocarbon group of some kind. Sulfuric acid (H2SO4)is used as a catalyst for this reaction in order to accelerate the rate at which the product is formed. The general formula of an ester is RCOOR’ in
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Introduction The purpose of this lab is to determine the concentration of two bases‚ carbonate and bicarbonate‚ by using a potentiometric titration. We can determine the concentration of the bases in the reactions ( H+ +CO3- < ==> HCO3- and H+ + HCO3- < ==> H2CO3-) by the way the pH of the solution changes. The way the pH changes when a strong acid is added can be used to determine the concentration of the strong and weak bases that are present in the solution. We can determine this by
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