Observing Osmosis in Potato Cells Planning Purpose: To observe the effect of osmosis on plant cells. Hypothesis: The higher the salt content of the water‚ the lower the mass of the potato. Variables: Independent: the salt percentage of the solution Dependent: the weight of the potato in grams Controlled: the amount of water the length of time between measurements the method of measuring the type of plant cells tested Equipment: (as seen on 2A Human Biology task sheet)
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Question 1: How does Osmosis works It refers to the movement of water molecules from an area of high-level water concentration‚ that is‚ a dilute solution‚ to an area of low-level water concentration‚ that is‚ a strong solution through a semi-permeable membrane. (Passmyexams.co.uk‚ 2015) Actually‚ water moves in a bi-directional manner with the aim of leveling up the concentration. However‚ a high number of water molecules move from the fresh water towards the salty water. The outcome
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Background 3 Hypothesis 4 Materials 5 Method 5 Results 6 Analysis of Results & Discussion 9 Conclusion 9 Recommendations 9 Bibliography 10 Appendices 11 Abstract The purpose of this investigation was to see the effects of different concentrations of saline solution on Red Blood Cells. When a Red Blood Cell is submersed in a high concentration of saline solution it will create a hypertonic environment and therefore cause the cell to rupture due to the process of osmosis. The methods
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GLIRICIDIA SEPIUM LEAF EXTRACT FOR HOGS MANGE INVESTIGATORY PROJECT IN SCIENCE SUBMITTED BY: CRISTEL GELIANNE M. ALOG SUBMITTED TO: MRS. LERMA A. AROSA INTRODUCTION A. Background of the study Gliricidia sepium is a kind of tree common in the community. People use it for fuel unaware of its value as medicinal plant. The idea that gliricidia
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This short story entitled The Last Leaf‚ was written by O. Henry (pseudonym for the American writer William Sydney Porter). It deals with the story of Sue‚ Johnsy and Old Behrman‚ three artists living in a drab district of New York City at the beginning of the twentieth century. One day‚ Johnsy gets sick with Pneumonia and makes it clear she won’t fight death. After the analysis of this short story‚ how can the end be interpreted? The story begins with a description of the area where the
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AHP216 04/16/13 I. Introduction: The purpose of this experiment is to observe the osmosis reaction in a potato with salt and water. In cooking cooks will soak their cut potato’s in water if they will not use them immediately. This allows the potato’s to be used later without turning color. The experiment shows the flow of water through the membranes of the potato with salt over a period of four hours. II. Objective: The reaction of the potato to the side submerged in water and the half excavated
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Introduction The purpose of this experiment was to demonstrate osmosis. Osmosis is the diffusion of water across a selectively permeable membrane (Bell et al 2004). Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration (Brown 1999). Hypertonic is the solution with a higher salt concentration. Hypotonic solution is the solution with the lower salt concentration. My hypothesis is that the potato core will increase in size. When the solution is
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close her eyes because she needs the light in order to continue her drawings. Johnsy agrees‚ but she tells Sue to hurry as she wants to go down like the last leaf. she goes to Mr. Behrman‚ informing him of the gravity of Johnsy’s condition‚ hoping there is something he can do. Sue takes him outside to look at the barren vine with one last leaf. So greatly concerned is Sue about her friend that she effects the change in Johnsy’s psyche that causes her to become well. Sue’s determination to do what she
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change in potato cubes 2) To determine the isotonic solution concentration for the potato Hypothesis: 1) If the concentration of the salt solution is higher than the concentration in the potato cubes‚ the percentage of weight change in potato cubes will be higher (positive). If the concentration of the salt solution is the same as the concentration in the cell‚ there will be no net movement of water through osmosis therefore there will be no percentage of weight change in potato cubes 2) The osmolarity
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Maple Leaf Foods Reaction Paper Introduction Canada is the country has the safest food system. However‚ the maple leaf food‚ one of the largest producers of meat products in North America and an integrated company with the value” We Take Care”‚ faced Listeria outbreak‚ described by the Company’s CEO as “the toughest situation we’ve faced in the 100 years of this company’s history”. The first part of this paper will give a general perspective on the actions and strategies of Maple leaf food in the
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