The effect of alcohol concentration on the cell membrane Abstract: In this experiment I found out that as the concentration of the alcohol was increased so did the colour intensity of the solution. This is because the higher concentration of ethanol‚ results in more damage done to the cell membrane‚ resulting in leakage of red pigment from the cell. If the membrane is damaged more‚ more red pigment will leak out of the membrane and into the ethanol. Hypothesis: The higher the concentration
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1. Plant Nutrition Nine macronutrients of plants: C‚ H‚ N‚ O‚ P‚ S‚ K‚ Ca‚ Mg Components of soil: Horizon a (topsoil): humus‚ leaf litter‚ decaying matter Horizon b (middle): minerals but no humus Horizon c (bottom): rock Most common nutrient deficiencies: N‚ P‚ K 2. Transport of Water and Minerals in Xylem Xylem transports water and minerals from the roots to the leaves Plant cells include: cell wall‚ plasma membrane‚ nucleus‚ chloroplasts and central vacuole Soil to root Water is absorbed
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posażona w wyspecjalizowane zakończenia nerwowe‚ czyli receptory‚ umieszczone w skórze‚ mięśniach i innych punktach ciała‚ reagujące na różne bodźce i przekazujące do mózgu wrażenia otrzymywane z zewnątrz. How do our bodies get information through the sense of touch? Nick was desperate. His paper for History class was due in an hour‚ but the thermostat in the computer lab wasn’t working and it was freezing in there! Pulling on his ski glove liners‚ he tried to finish typing the paper. “Hey
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council H opted to govern through a small council and relied on an elite group of coun’s who met him regularly‚ mostly made up of men spent in exile with him and whom he trusted: the chief officers of state: Lord Chancellor‚ John Morton‚ the Lord Privy Seal Richard Fox‚ the Lord Treasurer‚ John‚ Lord Dynham minor offices: Sir Reg Bray‚ Giles Lord Daubeny‚ Sir Rich Guildford‚ Sir Thom Lovell and Sir John Riseley elite coun’s later in reign: Sir Rich Empson‚ Sir Ed Belknap‚ Sir Ed Poynings and Edmund
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A VOTRE SANTÉ: PRODUCT COSTING AND DECISION ANALYSIS IN THE WINE INDUSTRY Priscilla S. Wisner Department of Accounting and Information Management College of Business University of Tennessee 638 Stokely Management Center Knoxville‚ TN 37996 Phone: 865.974.1714 Email: pwisner@utk.edu Case: A Votre Santé Page 1 of 17 Electronic copy available at: http://ssrn.com/abstract=1659912 BACKGROUND A Votre Santé (AVS) is a small‚ independent winery owned by Kay Aproveche. Kay has a relationship
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Chapter 35 Plant Structure‚ Growth‚ and Development Lecture Outline Overview: Plastic Plants? • The fanwort‚ an aquatic weed‚ demonstrates the great developmental plasticity that is characteristic of plants. o The fanwort has feathery underwater leaves and large‚ flat‚ floating surface leaves. o Both leaf types have genetically identical cells‚ but the dissimilar environments in which they develop cause different genes involved in leaf formation to be turned on or off.
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Thermometer: a Measuring Cylinder: a Bunsen burner: a Tripod: an Asbestos Gauze Cork Mat. Procedure: * The tripod and Bunsen burner were set up as shown in fig. 1 * Using the measuring cylinder 50gm of water was measured and poured into (1) one calorimeter labeled A‚ and 100gm was also measured and poured into the other calorimeter labeled B. * The calorimeter containing the 50gm of water was set on the cork mat and its temperature recorded at 23o C. * The other calorimeter containing
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wash before reuse. Use only in a well-ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes‚ skin‚ and clothing. Avoid ingestion and inhalation. Procedure: 1. Use a 125mL Erlenmeyer Flask fitted with one hole cork. Through the cork insert a reflux condenser. Place on top of a heating mantle while being supported by a retort stand and ring clamp‚ clamped to the reflux condenser. 2. Place 10mL of methanol‚ and 3g of salicylic acid‚ 20 drops of concentrated H2SO4 and a
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into the solution also needs to be kept constant. A mass of 2.5-2.6g is sensible. The diameter is fixed as the potato cork borer always measures to the exact same measurement. We also needs to make sure that the potato is left in the solution for the same time‚ 30:00 minutes. Equipment Potato Standard Sugar Solution Wash Bottle Test Tubes and Test Tube Rack Cork Borer Scalpel Cutting Board Scales accurate to 2.d.p
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electricity‚ magnetism and... garlic (image: inventors.about.com) Fast-forward to 1729 when‚ according to Encyclopedia Britannica‚ another scientifically-minded Englishman‚ Stephen Gray‚ discovered that electricity could flow. Before he decided to moisten corks in glass
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