In the early 1800s life in Ireland wasn’t easy‚ Irish citizens got by day to day by farming and relying on the potato. The potato was their main source of food and money. With out the potato the Irish would have nothing. No one was prepared for what was about to happen in 1845‚ the beginning of the Great Irish Potato Famine. The Irish Potato Famine was the worst tragedy in the history of Ireland. The outcome of the famine would result in hundreds of thousands dead‚ an failure of the economy
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Osmosis of a Potato cell. Hypothesis is that the potato in saltwater is going to show that it will break down the cells of the potato. Osmosis is the diffusion of a solvent through a semi-permeable membrane‚ from a solution of low solute concentration to a solution with high solute concentration‚ up a solute concentration gradient. Net movement of solvent is from the less-concentrated to the more-concentreated.‚ which tends to redure the difference in concentrations. This effect can be countered
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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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I. Experiment 1 A. Description of Experiment: Three plastic beakers were used for this experiment. In one‚ a 20 mL of 1% hydrogen peroxide solution was made. In order to get this‚ the stock solution‚ which was 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
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area of low concentration of water molecules (high concentration of dissolved particles). It is difficult to observe osmosis at the cellular level since cells are very tiny and can only be seen with a microscope‚ so you are going to use sticks of potato tissue in solutions that have different concentrations of dissolved substances to observe the effects of osmosis on living tissue. There are three basic relative concentrations of solutions. An isotonic solution has a concentration of dissolved particles
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Investigating the Osmosis Effect in Potato Cores Aim The aim of this experiment is to investigate the osmosis effect in potato cores while they are submerged in different concentrations of sucrose solution. Osmosis will take place while the potatoes are fully submerged in the sucrose solution. Apparatus æ Scalpel (1) æ Tile (1) æ Pr. Tweezers (1) æ 250ml Beakers (2) æ 100ml Water (Per Beaker) æ 100ml Sucrose Solution o 0.2M o 0.4M o 0.6M o 0.8M o 1.0M æ Measuring
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I. Aim The aim of the three experiments is actually to investigate the effects of different factors such as temperature‚ pH‚ and concentration of substrate‚ on the activity of the enzymes. By conducting these three separate experiments also‚ three graphs are able to be obtained where the trend of each factor affecting on the enzyme activity is shown and described clearly. II. Hypothesis Experiment 1 (Effect of Temperature): As the temperature increases‚ the height of the bubble will increase
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conditions. Room temperature was 22 ± 2 °C on a 12-h:12-h light:dark cycle. Access to food and water was ad libitum. Sucrose Metabolic Syndrome Induced Metabolic syndrome was induced from birth to eighteen weeks of life‚ by drinking a sucrose solution 35% ad libitum‚ which ensured that all main manifestations of the disease were developed. Three females and one male with sucrose-induced metabolic syndrome were mated. Likewise‚ we
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Introduction: In this experiment‚ you will study osmosis. Your task is to design an experiment that will determine what concentration of solute is isotonic with the specimen cells. (Design) Procedure: You will be provided with the following materials: Potato‚ potato corer‚ scalpel‚ forceps‚ electronic balance 10 % salt solution‚ distilled water‚ 50 mL beakers‚ graduated cylinder‚ paper towel You must design a procedure that will enable you to determine the concentration
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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 hypertonic‚ the potato will
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