HYPOTHESIS Solanum tuberosum L. final masses will decline as the concentration (2%‚ 5%‚ 10%‚ 20% and 25%) of sodium chloride increases. Potato slices placed in distilled water will have higher mass percentage due to the cells becoming turgid. BACKGROUND INFORMATION Diffusion is the movement of molecules from a hypertonic (high concentration solute) to the hypotonic (low concentration of solute). There are different types of diffusion one of which is osmosis. Osmosis is the movement of water molecules
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is a hypertonic solution. A hypertonic solution has a greater concentration of solute than another solution. In this the solvent‚ which is the substance doing the dissolving‚ will move from high to low concentration and both plant and animal cells will shrink due to water loss which is called plasmolysis. Plant and animal cells are both not fond of hypertonic solutions because they don’t want to shrink and have no way of fighting against it. The second type of solution is called a hypotonic solution
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Osmosis The purpose of this lab is to study how membranes of plant and animal cells react when exposed to different solutions. The first experiment involves purple onion skin and the second involves rat blood in various solutions. I needed to understand certain terms before preforming this lab to be able to efficiently explain what is happening to the cells. Diffusion is the tendency of a substance to move down its concentration gradient from a more concentrated to a less concentrated area.
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when water will diffuse from high water concentration to low water concentration to reach equilibrium. When the solutions are different the lower concentration solute is hypotonic while the higher concentration solute is hypertonic. The hypertonic solution would have a low water potential with a high solute potential. Hypotonic would be the opposite because water potential and solute potential are inversely proportional. Water potential is
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entities are small and moving in molecules. They collide because they are moving at a random pace. The temperature causes diffusion. 2. Define the terms hypertonic‚ hypotonic‚ and isotonic solution. * Hypertonic: Having increased pressure or tone‚ in particular. * Hypotonic: Having reduced pressure or tone‚ in particular. * Isotonic solution: a solution having the same osmotic pressure 3. Explain the similarities and differences between diffusion and osmosis. Both are the movement
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concentration of the SDS increases from low to high. o Since NaCL cannot cross the Beta vulgaris membrane‚ water will move into the Beta vulgaris membrane at a low concentration of NaCL‚ making the solution hypotonic‚ then out of the membrane as the concentration of NaCL increases‚ making the solution hypertonic. (Sadava‚ Heller‚ Hillis‚ and Berenbaum 2011) Results Using the solutions of beta cyanin from Beta vulgaris and various concentrations of different alcohols‚ transferred from the spot plates to
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outside the cell‚ it will draw the water in its direction. This is also why you get thirsty after eating something salty. Type of Solutions ISOTONIC SOLUTIONS If the concentration of solute (salt) is equal on both sides‚ the water will move back in forth but it won’t have any result on the overall amount of water on either side. HYPOTONIC SOLUTIONS The word "HYPO" means less‚ in this case there are less solute (salt) molecules outside the cell‚ since salt sucks‚ water will move into
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of water molecules across a cell membrane. When osmosis results in water molecules entering a plant cell‚ the molecules exert a pressure against the cell wall‚ called turgor pressure. 3. hypertonic‚ plasmolysis : hypertonic solution has a higher solute concentration than the cytosol of a cell. In a hypertonic solution a plant cell will lose water and shrink away from the cell wall‚ a process called plasmolysis. MULTIPLE CHOICE 1. d 2. b 3. a 4. c 5. b SHORT ANSWER Answer the questions in
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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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original water sample? Show work! 4. (9) State whether each of the following samples are isotonic‚ hypotonic or hypertonic compared to red blood cells. Predict the effect on a red blood cell (crenation‚ hemolysis‚ or none) that the following solutions would have: Sample 2% glucose solution 2% NaCl solution Pure H2O Isotonic/hypotonic/hypertonic? Crenation/hemolysis/none? hypotonic hypertonic hypotonic hemolysis crenation hemolysis 5. (6) Describe how an artificial kidney separates waste products
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