the same for potato cores placed in varying concentrations of solutes of NaCl‚ glucose‚ and sucrose. This experiment was designed to test these predictions and compare them to data gathered course wide. We found that the mean water potentials were all within 0.26 bars of each other‚ and that the zero weight change osmolalities were all within 0.035 mols of each other. This supported Van’t Hoff’s predictions that water potentials and osmolalities would be the same. We had to collect potato core samples
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The effect of Sodium Chloride (NaCl) salt concentration on osmosis in potato cells The movement of substances in plant cells involves many processes and systems‚ all of which may affect the plant bio-chemically and physically‚ and one of these processes is osmosis. Osmosis is the flow of water through a semi-permeable membrane of a cell moving from an area of higher water potential to an area of lower water potential until reaching equilibrium known as isotonic. Before reaching the point of being
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AT1- Osmosis In Potatoes Aim: Investigate the movement of osmosis through a selectively permeable membrane‚ in this case potato. Introduction: Osmosis is the movement of water through a semi permeable membrane‚ separating solutions of different concentrations. The water passes from a region of high concentration to a region of low concentration‚ until the two concentrations are equal in concentrations of water. Many cell membranes behave as semi permeable membranes‚ and osmosis
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Hypothesis The more hypertonic potato cores are to sucrose solution‚ the more weight potato cores gain. On the other hand‚ potato cores will decrease in weight when it is hypotonic to sucrose solution. Variables: Dependent: The final mass of the potato cores Independent: Concentration of sucrose Controlled: Size of potato‚ time spent in solution‚ amount of solution Method for Collecting Data: We decided to do a range of about 4.84g per piece of potato in each concentration of sucrose
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I am going to investigate osmosis when potato is placed in different concentrations of sucrose. I am aiming to witness osmosis in 5 different concentrations of sucrose. I will use 5 varying concentrations so that I have a wider spread to compare the results‚ and check that I don’t have any anomalies Prediction Osmosis is the process of diffusion of water molecules from a weaker solution into a stronger solution‚ through a semi permeable membrane. The tiny pores in the membrane
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Water Concentration in Potato Cells Formal Lab Report Purpose: The purpose of this lab is to determine the concentration of water in potato cells. Method: To complete this task‚ we will first soak our potato cells in different concentrations of sugar solutions. Before we actually soak them‚ we will need to know the initial mass of the potato cores. After soaking‚ we will need to know the mass of the final core. We will use the data we collect to find the percent change in mass of the cores
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original 1M solution of Sucrose. This is therefore the only thing that is going to be altered as I am investigating how different percentage of water molecules affects the weight of the the potato thus the rate and direction of osmosis. Dependant Variable The dependant variable will be the mass of the potato as this is the variable I will be measuring. From this I can see the change in mass(g) and so work out the amount of water that has moved and the rate of the osmosis in a set time. This can
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tissue would loose more weight the higher the solute factor in the outside solution. When the potato tubers’ where placed in high-‐in-‐solute solutions it dehydrated the the potatoes tissue making it loose weight. The water inside the potato was forced to leave the inside of the tissues cells because of the higher solute
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Christine Otieno Estimating Osmolarity of plant Cells(potato and celery)by percentage change in weight Using different sucrose concentrations Introduction The purpose of this experiment was to estimate Osmolality of plants cells i.e. Potato and celery by converting the observed change of weight in different sucrose concentrations. The hypothesis assumes that the solute concentration of the plant samples would be indirectly proportional to the weight; there would be decrease
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particles moved with more speed than the larger particles. B. Potato Core Experiment In this experiment we estimated the osmolarity of potato tuber tissue by submersing different potato cores into sucrose solutions of 0.0-0.6M‚ and weighing the potato. We concluded that the osmolarity of the potato was about 0.4M since the weight of the potato did not change after it was incubated in the solution with 0.4M. We also found that the potato was hypertonic to sucrose solutions of 0.0-0.3M and hypotonic
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