Osmosis Experiment Dennis M. Feliciano Grand Canyon University BIO100L Biology Concepts Lab June 25‚ 2011 Osmosis Experiment Materials Grapes (unblemished) Raisins (larger is better) Water Salt Four small containers (i.e.‚ drinking cups or clear glasses) A metric ruler Methods and Procedure Place 1 cup (236 ml) of water in each of the 4 containers. In 2 of the containers‚ add 1 tablespoon (14.8 ml) of table salt and mix well. Measure the length and width of a raisin and place
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Osmosis in Potato Tissue Experiment Background Information Osmosis can be defined as the movement of water across a semi-permeable membrane from a region of high water concentration to a region of low water concentration. The semi-permeable membrane allows small particles through it but does not allow large particles such as sodium chloride. Osmosis will continue until a state of equilibrium is reached i.e. there is no area with a higher or lower concentration than another area
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submerged in different solutions? Before diving into the experiment it is helpful to understand a few terms we will use along the way. Osmosis is the movement of a solvent (as water) through a semipermeable
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Osmosis in potato cells Aim: To view and examine the effect different concentrations of sucrose solution has on the movement of water across the cell membrane. Hypothesis: That the potatoes will either increase or decrease in mass‚ due to the effect of the different concentrations. Osmosis will occur. Apparatus: * Fresh potatoes * Apple corer * Scalpel * Petri dishes X 10 * 50ml measuring cylinder * Distilled water * Paper towelling * Sucrose solutions:
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DIFFUSION AND OSMOSIS Chapter 3 of your textbook explains diffusion and osmosis. Diffusion is simply the net movement of atoms or molecules from a region of higher concentration to a region of lower concentration. The force behind the movement is heat or kinetic energy (also called Brownian motion). Diffusion occurs when you spill water on the carpet floor and it spreads out‚ or when you open a bottle of perfume and it leaves the bottle and spreads throughout the air in the room. Osmosis is a similar
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Discussion: First of all‚ rinse all the apparatus that being used in the experiment with hydrochloric acid (HCL) then followed with distilled water (H₂O). Then‚ prepared the saturated calcium hydroxide (Ca (OH) ₂) solution into a filter funnel and filter paper over a second conical flask. Pour 100.00mL of saturated Ca (OH)₂ solution into a beaker and pour the solution through the filter paper by flowing the solution through a glass rod. After that‚ use a thermometer to measure the temperature of
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Larvicidal Activity of Lantana camara L. Leaf Extract Liquid Fractions Against Aedes aegypti I. Introduction • Start with malaria/dengue statistics for dramatic effect‚ then transition to the title of the study • Include in-‐text citations • Include the studies & concentrations used by these studies at Slide 11 • Replace “chemical” with “synthetic”
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completion of this laboratory activity‚ the student should be able to use the pressure probe to carry out experiments with gases. determine the relationship between the pressure and the volume of a gas. Background This experiment will draw upon your experience with computer-based laboratory methods from previous lab activities utilizing the computer. In the first part of the experiment‚ you will see how changes in volume affect the pressure of a gas. In the bonus part‚ you will have the opportunity
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Discussions The first portion of this experiment was the standardization of 0.1 N KMnO4 solution. In determining the Normality of KMnO4 (FW=158grams/mol)‚ Na2Cr2O4 was used as the primary standard. Na2Cr2O4 was titrated with KMnO4 in three trials. The Normality of KMnO4 computed using the volume of KMnO4 obtained during the three trials on the titration with Na2Cr2O4. The mass of Na2Cr2O4 used (see appendix). The Normality obtained in each trial are slightly close with each other. This may be
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Osmosis in Plants Outline: To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. Definition - Osmosis: Movement of a solvent (liquid) through a semi-permeable membrane separating solutions of different concentrations. The solvent passes from a less concentrated solution to a more concentrated solution until the two concentrations are equal. All
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