Experiment: Turgor in Potato Tissue 1. We labelled three test tubes A‚ B‚ C‚ D and added initials of people in our group. 2. Used a syringe or graduated pipette to put 20 cm3water in tube A and 10 cm3 in tube B. 3. Put 20 cm3 of 17% solution in tube C and 10 cm3 in tube B; put 20 cm3 pure sucrose solutions in tube D. 4. Working on the dissecting board I cut the ends off large potato. I was careful with the knife and cut it onto the dissecting board away from myself. 5. Used a cork
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Lab Topic: Movement of Materials Across the Cell Membrane—Potato Tuber Cells Introduction: Osmosis is a form of diffusion in which water diffuses through a selectively permeable membrane from a region of high concentration to a region of lower concentration. This form of diffusion takes place when the molecules in high concentration are too large to move through the membrane. Three factors that determine cell membrane permeability are shape‚ size‚ and polarity. For this experiment‚ it must
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The Gap‚ Inc. History Address: 2 Folsom Street San Francisco‚ California 94105 U.S.A. Telephone: (650) 952-4400 Fax: (415) 427-2553 Website: www.gap.com Public Company Incorporated: 1969 as The Gap Stores‚ Inc. Employees: 169‚000 Sales: $14.4 billion (2003) Stock Exchanges: New York Ticker Symbol: GPS NAIC: 448140 Family Clothing Stores Company Perspectives: At Gap‚ Inc. we never stop moving. It takes thousands of passionate‚ dedicated and talented employees around
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SULTAN’S BATTERY -Arvind Adiga Summary: Arvind Adiga’s Sultan’s Battery is an intriguing little story. It’s about a man‚ Ratna belonging to that part of the society which feels the weight of class differences the heaviest. He sells fake cures for venereal diseases (STDs) because this is the only way he can raise money for dowries for his three daughters. Ratna uses the astrologer as matchmaker
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Abstract The experiment was carried out to investigate at which point the potato has reached its isotonic environment. From the results‚ when the concentration increase to 0.3M‚ the mass of the potato slices decreased by -3.26%. We can conclude we see that as we increased the sucrose concentration it was a decrease in the percent change. Introduction All cells have membranes that are selectively permeable. In other words‚ they allow certain things in and certain substances are not allowed to
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IB Biology Potato Lab Table 1: Trial Number | Concentration of Sucrose Solution (M) ±0.2 ml | Initial Mass of Potato Core Slice(g) ±0.1 | Final Mass of Potato Core Slices (g) ±0.1 | 1 | 0.0 | 7.7 | 9.3 | 2 | | 6.0 | 8.1 | 3 | | 6.2 | 7.4 | 4 | | 10.2 | 13.2 | 5 | | 8.7 | 10.3 | 6 | | 4.9 | 6.0 | 7 | | 9.2 | 10.4 | 1 | 0.2 | 5.8 | 6.0 | 2 | | 11.6 | 12.1 | 3 | | 2.5 | 3.1 | 1 | 0.4 | 14.4 | 13.9 | 2 | | 2.6 | 2.8 | 3 | | 8 | 6.5 | 1 | 0.6 | 7.3 | 5.3 | 2
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3%‚ was diluted using 10 mL of hydrogen peroxide and 20 mL of water. In the second beaker‚ a ¼ dilution of potato extract was made using 2 mL of potato extract and 6 mL of water. The third plastic beaker contained 8 mL of water. Using the first and second beaker the experimental assay was performed. Using forceps a small paper disk was dipped into the second beaker containing the potato catalase for exactly 5 seconds. It was next dried on a paper towel for 5 seconds‚ and finally placed at the
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Alcock C‚ Payne S‚ Sullivan M (2004) Introducing Social Policy. Harlow. Pearson Education Ltd Anderton B‚ Riley R‚ Young G (1999) The New Deal for Young People: First Year Analysis of Implications for the Macro economy Becker‚ H. S. (1963). Outsiders: Studies in the Sociology of Deviance. New York: The Free Press Dominelli‚ L (1997) Sociology for Social Work DSS (1998) A new contract for welfare: principles into practice. London. The Stationery Office Erikson‚ K Evans‚ M.E (2001) Britain: moving towards
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Straight blades produce regular chips while rippled blades produce ridged potato chips. * 5 The slices fall into a second cold-water wash that removes the starch released when the potatoes are cut. Some manufacturers‚ who market their chips as natural‚ do not wash the starch off the potatoes. Color treatment * 6 If the potatoes need to be chemically treated to enhance their color‚ it is done at this stage. The potato slices are immersed in a solution that has been adjusted for pH‚ hardness
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Professor of Child Psychiatry Yale Child Study Center Dr. Robert Bradley University of Arkansas at Little Rock Center for Applied Studies in Education Dr. Deb Jensen Chair of Teacher Education and Human Performance College of Education Minot State University Dr. Elizabeth Birr Moje Arthur F. Thurnau Professor University of Michigan Dr. Robert Pianta Department of Human Services University of Virginia Dr. Sharon Ramey Director School of Nursing and Health Sciences Georgetown University Consultants Dr
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