Experiment to Investigate Osmosis in Potatoes The aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. Osmosis is the passage of water from a region of high water concentration through a semi permeable membrane to a region of low water concentration. This definition contains three important statements: a) It is the passage of water through a semi permeable membrane
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hypertonic. Hyper means greater than to the cell‚ and water will move out of the cell to the region of higher solute concentration. The last term would be isotonic which mean the same extracellular fluid has the same osmolarity as the cell‚ and there will move out of the cell to the region of higher solute concentration. Hypotonic‚ hypertonic‚ and isotonic are relative terms. That is‚ they describe how one solution compares to another in terms of osmolarity. For instance‚ if the fluid inside a cell has
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record the mass using an electronic balance. Through our data on the graph above‚ this is showing that our first 2 test tubes were hypotonic‚ which means water is sucked out. Thus in a less concentrated environment. Whereas test tube C was less isotonic‚ and the test tubes E and F were hypertonic‚ stating that it is situated in a more concentrated environment. Some of the potatoes gained mass because the water is going in the potato‚ showing that the potato is more concentrated than the environment
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Diffusion is a way nonvascular plants can get water. It is the movement of molecules from an area of higher concentration to an area of lower concentration until they are equal. An example of diffusion is red food coloring. When you put food coloring in a glass of water the color will spread through the water until all of it is a red tint. This shows the molecules of the food coloring equally distributed in the area of the water. Osmosis is a special type of diffusion where only the water molecules
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Brownian motion This is‚ presumably the random drifting of particles suspended in a fluid (a liquid or a gas) .This movement was discovered and later named after botanist Robert Brown (1773-1858). He was a Scottish botanist and palaeobotanist who made important contributions (including Brownian motion) to botany largely through his pioneering use of the microscope. The scientist who made Brownian motion famous is Albert Einstein‚ who brought the phenomenon to the attention of the larger physics community
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PART B DEFINITION Consumer psychology is a specialty area that studies how our thoughts‚ beliefs‚ feelings and perceptions influence how people buy and relate to goods and services. One formal definition of the field describes it as "the study of individuals‚ groups‚ or organizations and the processes they use to select‚ secure‚ use‚ and dispose of products‚ services‚ experiences‚ or ideas to satisfy needs and the impacts that these processes have on the consumer and society. STAGES IN CONSUMER
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Osmosis Experiment Diana Arrowood Grand Canyon University BIO-100L Biology Concepts September 16‚ 2011 Osmosis Experiment Directions Use the information below to complete the Osmosis Experiment. Materials 1 fresh baking potato Water Salt Four small containers (i.e.‚ drinking cups or clear glasses) A metric ruler Methods and Procedure 1) 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 until
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carbohydrate solutions then there will be a percent change in mass. The carrots have large vacuoles that hold water‚ this allows the mass to increase when the hypertonic solution is .2 M and 0 M‚ around .4 M the mass stays near the same because it is an isotonic solution‚ lastly the mass decreased when the hypotonic solution is .6 M and above. The experiment was developed with 6 plastic cups containing varying
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compared to no iodine solution and just water. This is due to the molecular collisions speeding up the experiment in the time period given because of the Soule molecules found within the given volume. This experiment can also refer to hypo‚ hyper and isotonic due to the two solutions being separated by the dialysis tubing (which acts as a semipermeable membrane) and diffusing from
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cell reaction to an isotonic‚ hypotonic‚ or hypertonic solution. Another objective was to understand the nuances of simple diffusion‚ facilitated diffusion‚ and active transport and to explicate the characteristics affecting the rates of diffusion. The next objective was to be able to explicate the partition coefficient and its influence on hemolysis. The final objective was to properly use a pipette (Spilios‚ 2015). Hemolysis occurred despite the red blood cells being in isotonic solution (0.3 M)
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