disorders. I want to study aging as a potent carcinogen using yeast as a model. Aging is indeed a potent carcinogen. Somatic mutation theory states that cancer is a genetic disease.It is so because cancer cells proliferate at a rapid pace as a result of mutations in their genes they have accumulated in themselves over the course of their lifetime. Hence the key points are Aging and Genetic instabilities that follows with it. I want to study yeast cells as a model as they are largely analogous to stem
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Consulting Chemists Institute Introduction The Consulting Chemists Institute was contracted by a local food manufacturer to determine if sodium benzoate‚ a common food preservative‚ undergoes significant chemical changes at the pH level encountered in the acidic environment of the stomach. Experimental Method Sodium benzoate was prepared by addition of an equimolar amount of aqueous sodium hydroxide (3 M‚ ~ 20 ml) to a benzoic acid (1.256 g‚ 10.3 mmol) /water mixture (10 ml). Benzoic
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BIO 111 Cell and Molecular Biology Lab Lab Report Grading Rubric - Yeast Respiration This is a 20-points assignment. It is graded out of 100 points‚ and then scaled down to 20. The report must be logical throughout and rationales must be explained well. Reminder: - A Graph MUST be shown; furthermore‚ you MUST add either a Table or a Figure. - 2 pages of text only (maximum). Tables‚ Graphs and Figures should be on separate‚ additional pages‚ without limits on the number of additional
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AIR POLLUTION IN THE PHILIPPINES Guides and Tips Home / Blog / Air Pollution in the Philippines Air pollution is a common and frequent problem nowadays. When you are on your way to work‚ you pass by your neighbors’ backyard where he is currently burning their garbage from yesterday‚ then you come across a smoke-belching public utility vehicle‚ then a guy beside you lighted a cigarette and started suffocating you with second-hand smoke. You cannot always depend on your handkerchief on covering
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pH and Living Systems I. Purpose: To observe the effects of pH change on an organic molecule. II. Materials: pH paper Droppers Ammonia Beakers (50ml) Paper towels water Glass stirring rods lemon juice forceps III. Procedure: Part 1: Initial pH testing 1) First use the wide range pH paper to test the pH of the liquids given. 2) When you test with the wide range paper first (which reads pH from 0-13) be sure
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When the body is deprived of oxygen it will then begin to meet its energy needs through the slow process of fermentation. In our lab we investigated alcoholic fermentation by using yeast‚ which can flourish in an low energy environment in anaerobic conditions. In this lab our goal was to discover the rate at which yeast will ferment different sized molecules of carbohydrates. In order to perform our experiment we made use of water‚ glucose‚ sucrose‚ and starch. It was hypothesized that glucose
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determining the effects of pH on enzyme activity show that as the independent variable‚ pH‚ increases the dependent variable‚ percentage transmission‚ decreases. This is shown in the results as at the lowest pH‚ pH 4.0 the average percentage transmission is at its highest at 97%. At the highest pH‚ pH 8.0 the average transmission is 78.5%. This is also supported from the graph as it produces a negative gradient showing that as the percentage transmission will decrease with an increasing pH. This happens
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digestive power of pepsin is greatest at the acidity of normal gastric juice (pH 1.5–2.5). In the intestine the gastric acids are neutralized (pH 7)‚ and pepsin is no longer effective. "Pepsin (biochemistry)." Encyclopedia Britannica Online. Encyclopedia Britannica‚ n.d. Web. 10 Dec. 2012. Research Question: Does changing the pH of pepsin affect the ability to break down the protein (mass of jello). Variables: independent- Ph level dependent- The mass of the jello control-
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In this lab‚ we were able to determine measuring the pH of liquids work. We were able to compare the liquids based on their pH level and determine which liquid was acidic or basic. Our results showed that if something came out to be seven or less‚ according to the pH scale‚ it means that an acid is a substance that donates hydrogen ions. Because of this‚ when an acid is dissolved in water‚ the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide
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The reason why I think this could be a limitation is because each solution has an extreme acidic pH level like 1 or 2. As a result‚ I speculate the supreme acidity of the solution could negatively affect the pH measurer that could make it lose the originality to measure the right pH level for later product. Hence‚ it is crucial to have the pH measurer calibrated in a buffer solution so that the measurement can have a high accuracy overall. Thirdly‚ when measuring the
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