Effects of Tonicity on Cell Membrane Abstract The purpose of this experiment was to determine the effects of tonicity on a cell membrane using red blood cells‚ potato strips and three unknown solutions (A‚ B‚ C). First three slides were prepared containing RBC’s and unknown solutions A‚ B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The
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Trident University Zina B. Groover Module 1 SLP Course Number: LOG 501 Dr. Tom G. Javarinis October 20‚ 2014 The Potato Chips According to how products are made. The potato chip became both a national and international sensation when a customer sitting in a restaurant called Moon’s Lake House located in Saratoga Spring‚ New York. Complained about his french fried potatoes being too thick and sent them back to the kitchen for redoing. The Chef working
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this lab was to find the water potential of a potato cell. The problem of this lab was‚ if there was a high molarity of solute‚ would it have a positive or negative water potential? The hypothesis of the experiment was‚ if there is a high molarity of solute then the water potential would be lower or negative. After obtaining potatoes‚ we cut them into pieces‚ weighed them‚ and then placed them in a solution overnight. In this lab‚ we explored the potato cell’s water potentiality. From the results‚
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CONTENTS * INTRODUCTION ----------------------------------------------------------- 3 * AIMS ----------------------------------------------------------- 4 * HYPOTHESIS ----------------------------------------------------------- 5 * RESULTS ----------------------------------------------------------- 6 - Calculations - Table 6.1 - Table 6.2 - Table 6.3 - Graph 6.1 - Graph 6.2 * DISCUSSIONS ----------------------------------------------------------- 7
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B. Potato I FACTS Mr. B. Potato‚ a wealthy real estate investor‚ recently purchased a house on a parcel of land for $400‚000. The house was appraised at a value of $300‚000 and the land had an appraised value of $100‚000. Mr. Potato plans to tear down the house and replace it with a new house worth $1‚500‚000 with the intentions of living in it personally. Paying to have the house bulldozed would cost Mr. Potato a considerable amount of money. It has been suggested to Mr. Potato to permit
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of Osmosis” The purpose of the lab was to discover‚ through osmosis‚ the concentration of sugar water in a potato. First‚ potatoes were cut into strips about 3 centimetres in length and six strips were individually massed. Next‚ the six strips were placed in 6 different Dixie cups‚ labelled A‚ B‚ Q‚ X‚ Y‚ and Z. Each of the Dixie cups were then filled just enough to cover the potato strips‚ with substances that matched the letters of the cups. About 24 hours later‚ the potatoes were taken out
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experiment is to test whether more water moves out of a potato when it is placed in a sweeter sucrose solution than a potato in a less sweet solution. The hypothesis of the experiment is that we expect more water to move out of the potato placed in the sweet solution than the potato placed in a less sweet solution. Independent variable: concentration of sucrose‚ concentrations: pure water H20‚ 0.1 M‚ 0.5M‚ 1M‚ 2M. Dependent variable: weight of potato sticks‚ original weight 0.7 grams. Controlled
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Molecular Botany; University of Bonn; Bonn‚ Germany; 3Centro Nacional de Biotecnología; Consejo Superior de Investigaciones Científicas; Campus Universidad Autónoma de Madrid; Madrid‚ Spain Key words: BAHD feruloyl acyltransferases‚ ferulate‚ periderm‚ potato tuber skin‚ suberin‚ suberized tissues‚ wax Abbreviations: TEM‚ transmission electron microscope; SEM‚ scanning electron microscope; FHT‚ ω-hydroxyacid/fatty alcohol hydroxycinnamoyl transferase; GPAT5‚ glycerol phosphate acyltransferase 5 and to
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concentration in potato discs. The dilutions of Hydrogen Peroxide were 0.2%‚ 0.4%‚ 0.8%‚ 1.2%‚ 1.6% and 2.0%. Dependent Variable: The dependent variable is the variable that is measured‚ in this experiment the dependent variable was time taken for disc to reach the surface. Rate = 1/mean time. Controlled Variables: The controlled variables were volume of hydrogen peroxide which was 10cm³‚ concentration of hydrogen peroxide of 2% stock concentration. Also same size discs of the potato which were
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Digital Balance used to measure the mass of the potato strip before and after osmosis. Time should be kept constant when the potato strip is put into the solution Hypothesis: The mass of the potato strip will increase in water and dilute concentrations of sucrose depending on the concentration within the cell. When the concentration of the sucrose solution outside the cells of the potato strip will be less‚ the mass of the solution will increase as water molecules from outside will diffuse into
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