potential of a potato Aim Osmosis is the movement of water molecules from a region of high water concentration to a low water concentration through a semi-permeable membrane. Our aim is to investigate the water potential of a potato through osmosis‚ by finding the difference in weight before and after the potato has been set in a solution of water‚ sugar or salt. Trial Method Firstly we collected the equipment. This included a scalpel‚ potato cutter‚ and test tubes. Then we cut the potato using the
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EXPERIMENT: TESTING OSMOSIS WITH A POTATO |LAB DATE: NOV. 23rd / 2012 | |CLASS: Y-11-C |PERIOD:C | OBJECTIVE The weight of the potato slices will increase‚ decrease‚ or remain the same? HYPOTHESIS There will be no net movement of water molecules into or out of the potato. MATERIALS LIST |Large potato
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How To Make Chocolate Chip Cookies Have you ever wanted to make some really delicious and perfectly baked chocolate chip cookies but didn’t know how to? Well‚ it’s not as hard as you think it is. There’s just a few simple steps that you should follow and your cookies will end up tasting amazing and everyone will want to have the “secret” recipe. The first step that you must do is preheat the oven to three-hundred seventy five degrees‚ depending on how your oven bakes you may
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Aim The aim is to find the concentration (mole/dm3 (M)) of solute in a potato cell by using the process of osmosis and different concentrations of sucrose solution. Background information Osmosis is diffusion of water across a partially permeable membrane. It moves from a solution with less solute concentration (high water potential) to a solution with more solute concentration (low water potential). The one with a high water concentration is called a hypotonic solution and the low water concentration
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4000310515center095000420003263900175001760220OSMOSIS IN POTATO CELLS 450000OSMOSIS IN POTATO CELLS 42672007972425Aruna DhungelbIOLOGY 2A OCTOBER-28-14 00Aruna DhungelbIOLOGY 2A OCTOBER-28-14 Osmosis in Potato Cells Aruna Dhungel Biology 2A October 28 2014 Purpose: To see how much osmosis or diffusion will occurs in potato cell based on the concentration of molarity. Procedure: Obtained 3 cups and label A‚ B‚ and C To cup A added 150ml H2O and 8.775gNaCl (stirred
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The Irish Potato Famine Have you ever thought that one day all of the potatoes could go bad? Unfortunately it’s true.The potato famine or known as the Great hunger was in Ireland until 1845-49. People of all ages were affected.Since the soil was poor‚ potatoes didn’t grow like they’re supposted to. The cause‚ a failure of the Irish potato crop due to an infestation of Phytophora infestans‚ a microscopic fungus‚ also called the potato blight.They think that the disease was brought him by an American
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affect the rate of enzymes reactions. One of them is pH‚ which influence on the enzyme activity will be the subject of this investigation. Catalase of potato tuber cells will be the enzyme used in the experiment. RESEARCH QUESTIONWhat is the influence of different values of pH on the activity of catalase in potato tuber cells?VARIABLESIndependent: potato discs treatment (placing them into buffer solutions of different pH values‚ mixed with hydrogen peroxide)Dependent: the activity of the catalase‚ reflected
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In this study‚ three general media will be used for the detection of microorganisms on the equipment‚ personnel‚ raw materials and the finished goods. These are Potato Dextrose Agar (PDA)‚ Plate Count Agar (PCA) and Violet Red Bile Agar (VRBA) under the Univar brand. The amount of each prepared medium or dehydrated medium depends on the number of samples to be tested. PDA is usually used for the presence of yeasts
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experiment is to study how enzyme activity is affected by environmental conditions. Researchers tested the level of potato extract enzyme activity with 1-11 pH‚ varying temperature‚ catechol solution‚ hydroquinone solution‚ and different measurements of catechol. In Figure 1A and 1B‚ pH levels were tested with potato extract to see how pH would affect the amount of Benzoquinone is formed in the potato. Although it was hypothesized that enzymes would form Benzoquinone better in acidic pH levels‚ the absorbency
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2012 년 2 학기 Strategic management Assignment Questions 1. Why‚ historically‚ has the soft drink industry been so profitable? 2. Compare the economics of the concentrate business to that of the bottling business: Why is the profitability so different? 3. How has the competition between Coke and Pepsi affected the industry’s profits? 4. Can Coke and Pepsi sustain their profits in the wake of flattening demand and the growing popularity of non-CSDs? 1. 2. 3. What were the key factors behind
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