The effect of osmosis on artificial cells with different concentrations of sucrose Alex McRae Biology 120-902 Grand Valley State University 1 Campus Drive Allendale‚ MI 49401 mcraeal@mail.gvsu.edu Abstract In this study‚ we tested the validity of osmosis in artificial animal cells. Osmosis is the diffusion of free water across a membrane. The purpose of the study was to calculate the rate of osmosis in artificial cells containing different
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Rachel Smith Dimmer English 11 April 21‚ 2014 A Raisin in the Sun In my opinion‚ the most prevalent theme in‚ “A Raisin in the Sun” is the real meaning of money because all of the family members have dreams that require money in order for them to be fulfilled. Walter is always trying to get money to open up a liquor store and believes that the only way he can be a successful man is if he reaches this goal. Throughout the book‚ Walter is envious of wealthy people and is somewhat embarrassed
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Introduction The reason of this experiment was to identify the properties and effects of osmosis. Osmosis can be defined as the diffusion of water through a selectively permeable membrane. (Miller/Levine) Osmosis occurs when there is an area of higher and lower concentration. Osmosis is a type of diffusion. Diffusion is when molecules move from an area of higher concentration to an area of higher concentration. The three types of concentrations are hypotonic‚ hypertonic‚ and isotonic. When in comparison
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Struggling for Opportunity In the 1950’s‚ black Americans were considered separate but equal. However‚ that was not how they were treated. They were still treated with disrespect and kept in a low social status. In the play‚ “A Raisin in the Sun‚” Lorraine Hansberry brings forth the struggles that were faced by black Americans living in Chicago in the early days of the civil rights movements such as job discrimination‚ housing discrimination‚ and unequal educational opportunities. One struggle
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The results that were collected in lab #1 shows the relationship of surface areand volume in the artificial cells to the diffusion rate using the phenolphthalein-NaOH agar and the HCl solution. Lab #2 was a model of diffusion and osmosis‚ in which we filled the model cells with different solutions and determined the rate of diffusion. In lab #3‚ the results demonstrated the interactions between selectively permeable membranes‚ water‚ and solutes and how they are important in cellular and organismal
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A Raisin in the Sun Would you consider you family to be the most important relationship in people’s lives? A Raisin in the Sun is about a African-American family struggling in poverty. The Younger family has many dreams‚ each individual having their own dream‚ that contradict their relationship as a family. The families troubled issues‚ and high dreams have caused their connection as a family to disjoin. People should consider‚ that the most important relationship in their lives‚ is one with
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Demonstrating Osmosis in Potato Conclusion The data we had did not support the definition of Osmosis‚ Osmosis is the diffusion of water through a partially permeable membrane from a region of lower solute concentration to a region of higher solute concentration; the data we collected did not seem to fit into this. The potato chips were suppose to lose more mass in the higher concentrated solution as the water from the potato chip will flow out to the higher concentrated solution as the water inside
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Introduction: This experiment was used to examine the hypothesis that: Osmosis is dependent on the concentrations of the substances involved. Diffusion is the passage of solute molecules from an area of high concentration to an area of low concentration (Campbell & Reece‚ 2005). An example is ammonia diffusing throughout a room. A solute is one of two components in a chemical solution. The solute is the substance dissolved in the solution. The solvent‚ the other component‚ is any liquid in
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Northern Kentucky University BIO 150L: Introduction to Biology I Instructor: Dr. Bethany Bowling Osmosis and Diffusion Report Estimating the Osmolarity of Plant Cells--Potato YAO ZHANG 03/26/2012 Introduction: It is undeniable that all cells have the kinetic energy. It will led the cells move randomly around to others. For this molecular movement‚ there are two results that might happen. Diffusion is one of them. Diffusion is the movement of molecules that between the
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Dreams and Raisins A Raisin in the Sun is a play by Lorraine Hansberry that debuted on Broadway in 1959. It was the first Broadway play written by a black playwright. The title comes from the poem "A Dream Deferred" by Langston Hughes. The play portrays a few weeks in the life of the Youngers‚ an African-American family living on the South Side of Chicago in the 1950s. The theme expresses the importance of dreams and how achieving those dreams can come with various obstacles and struggles. Hansberry
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