all. This is why enzymes are crucial to life‚ without it life would not exist on earth. One of the many enzymes that are produced naturally within the body is catalase. In Denham Harman’s free-radical theory of aging‚ it is theorized that cells age as a result of exposure to free radicals and oxidizing agent such as hydrogen peroxide. Catalase is the major line of defense that converts hydrogen peroxide into water and oxygen‚ thus decreasing levels of free radicals in the body. According to an article
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conditions of communist countries. The static number of deaths due to communism is approximately 94 million. Compared to the deaths of the holocaust which would stand at 11 million. 94 million is a to high number‚ when dealing with innocent lives. The Potato Eaters‚ a painting by Vincent Van Gogh‚ a novel by George Orwell published in 1954‚ and “Dog‚” a 1977 song performed by Pink Floyd and written by David Gilmour explore the idea that communists countries have harsh conditions that will be apart of
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Osmosis using potato cores and sucrose solution 1.0 Abstract This experiment’s ultimate goal is to find the water potential of the potato cell. This was achieved through placing potato cores in different concentrations of sucrose (0.2%‚ 0.4%‚ 0.6%‚ 0.8%‚ 1.0%‚ 2.0%‚ 3.0% and 4.0%) solution and to observe how much water was gained or lost through osmosis to reach a prediction of the concentration within the potato cell. The results displayed that the concentration of sucrose within the potato cell is
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Effects of Temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration on Enzymatic Activity INTRODUCTION Enzymes‚ proteins that act as catalysts‚ are the most important type of protein[1]. Catalysts speed up chemical reactions and can go without being used up or changed [3] Without enzymes‚ the biochemical reactions that take place will react too slowly to keep up with the metabolic needs and the life functions of organisms. Catecholase is a reaction between oxygen and catechol
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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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Title: “The Effect of Substrate Concentration‚ Enzyme Concentration‚ pH and Temperature on Enzyme Activity” Abstract: In the following experiments we will measure precise amounts of potato extract as well as Phenylthiourea‚ combined with or without deionized water and in some instances change the temperature and observe and record the reaction. We will also investigate the different levels of prepared pH on varying samples of the potato extract and the Phenylthiourea and record the results.
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populations. The Irish potato clones were certainly low on genetic variation‚ so when the environment changed and a potato disease swept through the country in the 1840s‚ the potatoes (and the people who depended upon them) were devastated.Thesis: The Irish Potato Famine devastated the Irish population and economy as well as sowing the seeds of rebellion against England. 1st Point: Ireland dependent on potato • Families spent most time on cash crops to pay rent • Potato easy to grow‚ nutricious
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pH & Enzyme Action Aim: To inspect the effects of the pH on enzymes. Apparatus: 100 cm³ Beaker 3 – 5cm³ Syringes 2 Test Tube Racks with 8 Test Tubes Stop-watch Ruler Dropping bottle of detergent Marker Pen Masking Tape 400cm³ Hydrogen Peroxide 200cm³ Liver Catalase Solution 100cm³ of following Buffer Solution – pH5 pH7 pH9 pH11 Method: The materials were collected. The test tube rack one with 4 test tubes had been labelled A to D. The 2cm³ of each buffer solution
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The Effect of Temperature on Enzyme Activity and Oxygen Production Throughout this report you will gain information as to how temperature effects the amount of oxygen produced in an enzyme- catalase experiment. In the experiment we used liver extract as a catalase and created a chemical reaction within a reaction chamber between the catalase and hydrogen peroxide as well as three different controlled temperatures. In the procedure below there will be a step by step process as to how
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Osmosis in Potato Tubers Andrew Dickson Background When a plant cell is bathed in a solution of the same concentration (isotonic) as its intracellular environment‚ its mass and volume remain the same. This is because water enters and leaves the cells at the same rate. There is no net loss or gain of water by osmosis. Samples of cells can be placed in a range of solutions of different concentration. The cells will gain water by osmosis when placed in solutions which are more dilute (hypotonic)
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