How Do Hypotonic‚ Hypertonic‚ and Isotonic Solutions Affect the Water Movement of a Cell? Michael Halverson Valhalla High School El Cajon‚ California Research Host: Kim E. Barrett‚ Ph.D. University of California‚ San Diego 1997 Grade Level: High School How Do Hypotonic‚ Hypertonic‚ and Isotonic Solutions Affect the Water Movement of a Cell? Purpose: The purpose of this activity is to teach students about osmosis and the effects of hypotonic‚ hypertonic‚ and isotonic solutions on animal
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Diffusion and Osmosis Introduction Tonicity refers to the concentration of solutes in a solution (Lab 6-7). There are three stages of tonicity: Isotonic‚ hypertonic and hypotonic. Four unknown solutions were given and labeled as followed: Solution A‚ Solution B‚ Solution C‚ and Solution D. Since potato cells were used for this type of experiment‚ in an Isotonic solution the solute and water concentration are the same as inside the cell in which the isotonic solution contains 0.9% NaCl. In other
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Introduction The purpose of 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
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Potato Cell Cytoplasm Composition PURPOSE: To determine the concentration of salt in the cytoplasm of potato cells HYPOTHESIS: Increase in salt concentration results in a hypotonic solution where the mass of the potato increases due to the movement of water into the cell. On the other hand‚ decrease in salt concentration results in a hypertonic solution where the mass of the potato decreases due to the movement of water outside the cell. MATERIALS: Potato Forceps Stopwatch Scalpel Test
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Osmosis & Diffusion Review Sheet Name: Fill in the Blank away low high hypertonic hypotonic diffusion molecules osmosis vacuole water solute permeable towards semi-permeable concentration gradient 1. The cell membrane regulates and controls what kind of molecules ______ move in & out of the cell. 2. When molecules spread from an area of high to low concentration‚ it is called _Diffusion_____. 3. As molecules diffuse‚ they create a _concentration gradient_____
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1- Explain how Brownian movement exemplifies diffusion. The Brownian movement is random movement of microscopic particles suspended in a fluid‚ caused by bombardment of the particles by molecules of the fluid. First observed in 1827‚ it provided strong evidence in support of the kinetic theory of molecules. The diffusion is a form of Brownian movement‚ or we can say The Brownian movement leads to diffusion in three different types‚ where the particles move from high concentration to low concentration
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Introduction: The objective of this experiment is to demonstrate osmosis by using an egg as a model. In order for this to happen the vinegar will make the eggs shell disappears. The reason for this is because vinegar has acetic acid and the shell has calcium carbonate‚ when these come into contact it produces carbon dioxide. This is the reasoning for the little bubbles when the egg is first put into the vinegar. After the shell discinigrates it will become rubbery from the acetic acid‚ at this
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MY DADDY’S RECIPE Chicken Fricassee is a popular dish made in the Puerto Rican culture. With this dish‚ we cook red beans and rice on the side‚ making it a complete full course meal. The number of spices in this dish I guarantee will leave every taste bud in your mouth satisfied with every bite. As a Child‚ my father would make me chicken fricassee when I was sick. Not only does is make the perfect dish‚ but it’s also “the miracle soup”‚ gets the job done every time by curing my cold or whatever
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How to Make a Pizza Generally if you ask someone what their favorite food is you’ll probably hear the word pizza. Pizza is one of everyone’s favorite foods. There is so many different toppings‚ cheeses‚ sauces‚ and crust styles. But not everyone knows how to make a pizza‚ so this essay will break the recipe down step by step to tell someone how to prepare and create a pizza. First‚ to start out you must start by prepping all of the necessary items for the pizza. Generally you will start by
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Osmosis Rates in Artificial Cells Daniel George Department of Biology Grand Valley State University 1 Campus Drive Allendale‚ MI 49401 georged@mail.gvsu.edu Abstract The lab for this paper was conducted for the topic of osmosis‚ the movement of water from high to low concentration. Five artificial cells were created‚ each being filled with different concentrated solutions of sucrose. These artificial cells were placed in hypertonic‚ hypotonic‚ or isotonic solutions for a period of 90
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