Martina Oganesyan Title of investigation: The effect of solute concentration on osmosis in potatoes. Research question: What is the solute concentration of a potato? Hypothesis: Osmosis is the movement of water across the membrane from an area of high concentration to an area of low concentration. The osmosis continues until the solute concentrations are equal in both areas. In this experiment‚ we put pieces of potatoes into test tubes with sugar solutions of different concentrations and leave
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The Process of Osmosis and its Importance to Living Organisms. Osmosis is the diffusion of water through a semipermeable membrane that does not allow dissolved solids (solutes) to pass. Osmosis refers only to diffusion of water and the direction of movement is from the area of higher concentration to the area of lower concentration. This migration of water from a region of higher concentration to a region of lower concentration is spontaneous and although water molecules move in both directions
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Determining the Rate of Osmosis with Water and Sucrose 10/3/2012 Determining the Rate of Osmosis with Water and Sucrose Author: Results: Bag 1 had a rate of osmosis equal to 0.01 grams per minute. Bag 2 had a rate of osmosis equal to 0.0543 grams per minute. Bag 3 had a rate of osmosis equal to 0.0471 grams per minute. Bag 4 had a rate of osmosis equal to 0.0886 grams per minute. Bag 5 had a rate of osmosis equal to -0.0914 grams per minute (Figure A). Figure A: Shifting of mass
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A Raisin in the Sun; Lorraine Hansberry Themes: One of the central themes depicted in the play A Raisin in the Sun‚ written by Lorraine Hansberry‚ was racial discrimination. Because the main characters in the family of the play were African American during the time when racism was still greatly expressed‚ the Youngers endured hardships that complicated their goal of the American Dream. They were looked down upon and rejected because of the color of their skin‚ but they did not let that stop them
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The character Asagai portrayed in A Raisin in the Sun as a student from Nigerian with a desire to marry Beneatha and return to his country. They both met on a college campus with Beneatha making a statement of finding her identity. Of course‚ the author’s thoughts during this time imply that the only way an African American can find their existence is a native African. Asagai first encounter with Beneatha‚ he brings a native robe from his sister collection as a gift. In fact‚ being a Nigerian promotes
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better place. While other people dream of horrible things that could ruin their lives and others. So today when we look at these three different pieces we will analyze the different types of dreams and the way they affected people. In the play A Raisin in the Sun
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individual identity. Although the patterns of white dominance over blacks have not disappeared over time‚ they have changed in this regard. In the 1900s‚ blacks were finally express their own identity‚ and were not held back by whites. The play “A Raisin in the Sun‚” by Lorraine Hansberry‚ exemplifies this. The play only provides a glimpse into the life of the Younger family and those they interact with‚ as it takes place over a short period of time. However‚
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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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The Effect of Osmosis on Differences of Amount of Sucrose Osmotic Pressure and its Influence on the Concentration of Sucrose in Solution Brennan Montoni Movement of molecules and Ions Names of Lab Partners Biology 110 March 23‚ 2011 Code of Academic Integrity INTRODUCTION: During the process of osmosis‚ water will move across a differentially permeable membrane. The water will transfer from a region of lesser solute concentration to a region of greater solute concentration
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Microcontroller Based Raisins Manufacturing Process Background Raisins are made primarily by sun drying several different types of grapes. They are small and sweetly flavored with a wrinkled texture. The technique for making raisins has been known since ancient times and evidence of their production has been found in the writings of ancient Egyptians. Currently‚ over 500 million lb (227 million kg) of raisins are sold each year in the World‚ and that number is expected to increase because raisins are recognized
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