Diffusion & Osmosis 9/16/14-9/19/14; Jessica Bullock‚ Andrew Buchholz‚ Kristamae Masiclat TITLE: Different Ways to Express Diffusion and Osmosis INTRODUCTION: Diffusion is the spontaneous movement of a substance down its concentration gradient‚ from a region where it is more concentrated to a region where it is less concentrated. Osmosis is the diffusion of water across a selectively permeable membrane. The objective of this lab is to observe the different effects of diffusion and osmosis through
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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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plant physiologist‚ Wilhelm Pfeffer. Ten years prior‚ Moritz Traube prepared the first recorded synthetic membrane that was made from a precipitated film of copper ferrocyanide. It was not until almost two hundred years later that the process of osmosis was revisited and extensively reviewed by researchers from the University of California at Los Angeles. In 1959‚ Sidney Loeb and Srinivasa Sourirajan developed a membrane made from cellulose acetate‚ which removed at least ninety percent of salts
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amount of sucrose concentrations. The higher molarity concentrations increased the movement of water to balance out the inside of the tube and the beaker. The greater amount of concentration gradient‚ in each tube‚ increased the rate of osmosis. This rate of osmosis is due to the net movement of water from an area of low concentration to an area of high concentration. Because the tubes had different concentrations‚ certain tubes gained more mass than others. Solution A had 0.6 molarity which increased
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LEDIIA CIIRKO LED A C RKO Date 25th May‚ 2011 BOSTON CHICKEN INC (CASE ANALYSIS) Questions 1. How is the company reporting on its performance and risks? What are the keys assumptions behind these policies? Do you think that its accounting policies reflect the risks? 2. What adjustments‚ if any‚ would you make to the firm’s accounting policies? 3. What questions would you ask management about the company’s performance? 4. How is Boston Chicken performing? 5. What assumptions is the market making
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Campbell’s” Chicken Noodle Soup Ever since I was a little girl‚ I have never once eaten chicken noodle soup from a can. The mixture of salty slimy noodles combined with the brown-not to mention overly chewy pieces of so called “chicken”- was never appetizing to me. Although‚ from the way I was raised it really isn’t my fault I’m such a snob for the higher quality of the soup. It was nothing in comparison to what my whole family was used to when they wanted a warm cup of goodness: My mother’s chicken noodle
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Effect of Sucrose Solution on Osmosis Aim: The aim of the experiment is to show how varying the concentration of sucrose solution affects osmosis by changing different molar solutions of sucrose and water and how it affects the potato. Introduction: In this investigation I will be exploring the effect of varying concentration of sucrose sugar solution on the amount of activity between the solution and the potatoes. Osmosis is the movement of water molecules across a partially
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Carnell Jackson September 22‚ 2011 BUSG-178-105 Mrs. Tricia Jeanfreau Jamaican Jerk Chicken A Taste of the Caribbean When I received this writing assignment‚ and I saw I had the option on writing about any particular recipe; I immediately called up my Jamaican friend‚ Bob Marley‚ and my Mom who got married in Jamaica. My mom said: "Oh‚ I have a really great recipe from the Hotel’s Executive Chef‚ where your Dad and I got married. But it’s in the garage and I don’t
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Osmosis Lab Conclusion The purpose of this lab is to determine whether salt affects the movement of water in the cell. Independent variable is the factor that affects the value of variables dependent to it. In osmosis lab‚ the independent variables are the potato and onions. The dependent variable is the variable whose value is measured to determine the extent of the effect of another variable to it‚ as in an experiment. In osmosis lab‚ the dependent variable is the length of the potato. The controlled
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At the beginning‚ we have a little opening in a casual talking way. The main topic that we discuss is ‘ cultivate soul ’‚ then two of the student think there is a book ( Serving of Chicken Soup for the Soul ) is about the ‘ cultivate soul ’ and they tell the others one of the story in the book——Mr. Washington. The story was starting in a school and the main character is called Brown. Brown is a student who is a little bit clumsy so many classmates didn’t like him. However‚ Brown met Mr. Washington
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