An investigation to compare the reaction rates between potato and hydrogen peroxide against liver and hydrogen peroxide through loss in mass. Background information: Catalase is an enzyme that is found in all cells. This means that it is an intracellular enzyme. And enzyme is a biological catalyst. A catalyst is some thing that speeds up a reaction without being changed itself. Because of this enzymes and catalysts can be used again and again. Enzymes are protein chains that have a primary‚ secondary
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Enzymes lower the activation energy of chemical reactions but they themselves are not consumed or altered when doing so. These catalysts work best at optimum temperatures and pH’s. The temperature and pH at which the reaction occurs the quickest is the ideal condition for the enzymatic reaction. Alpha amylase converts starch into glucose and when starch is combined with I2KI indicator a dark purple solution forms. As the enzyme breaks down the starch the absorbency will decrease. The absorbency
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at different pHs Abstract These experiments aimed to determine the optimum pH ranges various buffers are effective and provide opportunity for the use of the Henderson-Hasselbalch equation to prepare a buffer of a specific pH. Three different buffer systems were initially investigated; volumes of weak acid and weak bases of specified concentration were prepared and titrated against strong acid or strong base solutions with pH readings taken at frequent intervals to determine pH ranges over which
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Bean Growth with Different pH Levels Through this experiment‚ the objective was to find which pH liquid created the best environment for the Mung beans to grow. First‚ the beans were placed into bags with different pH liquids. Then‚ measurements were taken each day to monitor the growth average of the beans. The pH 2 beans average size at the end of the experiment were 0.24 cubic centimeters‚ the pH 7 size average was 0.38 cubic centimeters‚ and the size average of the pH 2 beans was 0.24 cubic centimeters
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Matthew Saldanha Bio DCP lab-Catalase experiment Aim: To investigate enzyme kinetics‚ using different concentration of the enzyme. Hypothesis: The assay system used in the lab consists of a filter paper disc coated with the enzyme and the dropped into a papercup of substrate (Hydrogen Peroxide). As the hydrogen breaks down the hydrogen peroxide into hydrogen and oxygen gas‚ the bubbles of oxygen gas collect underneath the filter and make it
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Introduction: The purpose of this experiment is to measure the effects of changes in temperatures and pH on enzyme activity in skeletal muscle‚ particularly the activity of lactate dehydrogenase (LDH). LDH is a glycolytic enzyme which converts pyruvate to lactate in the following equation: LDH Pyruvate+ NADH ------------ Lactate + NAD The reaction above can move in both directions‚
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Look again at ‘At a Potato Digging’ by Seamus Heaney and at ‘A Sheep Fair’ by Thomas Hardy‚ which both deal with the theme of the hardship of rural life. With close reference to the ways each poet uses language‚ compare and contrast what the speakers in the poems say about rural life. You should include relevant contextual material. Which poem do you find more interesting? Give your reasons. Seamus Heaney and Thomas Hardy both depict images of rural life as difficult and uncomfortable. In their
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Eugenia Collier “SWEET POTATO PIE” Sukhanova E. LP31/2 Eugenia W. Collier (born 1928) is an African-American writer and critic best known for her 1969 short story "Marigolds". She was born in Baltimore‚ Maryland‚ USA. Collier ’s collection‚ Breeder and Other Stories‚ was released in 1993. She has also published a play‚ Ricky‚ based on her short story of the same name. Other texts that Collier has written or contributed to include are Impressions
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Zhaoyi.Yi Operation Management MW1:00 pm-2:15pm Dr. Segall February 3‚ 2015 Frito lay’s quality - controlled potato chips This video is about Frito-Lay’s‚ which a snack company is. The company has 60 percent markets share. According to Tom Rao who is a vice president‚ operation of Florida Region‚ Frito-Lay’s commitment to deliver in top quality products in the marketplace is really four key areas‚ and it starts with top quality ingredients. Second‚ it is s strict adherence to a recipe that is based
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transmission at pH 2. At pH 9 the Trypsin has 39% light transmission. Between pH 2 and pH 9 the percentage of light transmission decreases at a steady rate‚ until it reaches pH 8 where there is a steep increase from 30% to 39% as the enzyme has reached its optimum pH at 8. During the experiment in the boiling tube this pH had the deepest red colour as the most protein gelatine was broken up. This meant that in the colorimeter when testing to see what the light transmission‚ this pH let the least light
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