Osmosis and Diffusion Lab Observations: Diffusion: | Before | After | Color of liquid sack | clear | blue | Color of liquid in beaker | dirty yellow | golden | Glucose present Stick Test | no | yes | Color of the test stick | No change in color | Green | Osmosis: | Fresh | Salt | Beginning mass of potato | 2.51 | 2.16 | Texture of potato | Dry | Dry | Overnight mass | 3.12 | 1.84 | Overnight Texture | Hard‚ strong | Squishy‚ pliable | Data and Analysis: Diffusion:
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Egg Osmosis Lab Introduction What is osmosis? Osmosis is a very important part of biology. It is the spontaneous passage of water or other solvents through a semipermeable membrane. A semipermeable membrane is one that blocks the passage of dissolved substances. Osmosis occurs when there is an imbalance of solutes outside of a cell versus inside the cell. A solution that has a higher concentration of solutes than another solution is said to be hypertonic‚ and water molecules tend to diffuse into
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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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Bitter Sugar Bitter Sugar is now one of my most favorite foreign movies‚ other than ‘Swept Away’. It gives me such a great help understanding the political system in different parts of the world. On this occasion I will begin to interpret the film ‘Bitter Sugar’ directed by ‘Leon Ichaso.’ Bitter Sugar is a film that is mostly in my opinion‚ anti- Castro. Although the film was made in 1996‚ it was representing the period after the Cuban Revolution. Hence‚ the film is shot in Black and White. The
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Sugar Studying sugar may seem like an ineffective way to approach the Caribbean’s rise to a globalized economy. It is quite the contrary‚ sugar rose to be an extremely popular and profitable staple for the international food economy. It grew to play a major role in what we know of today as the global food market. Sugar started developing immense popularity around the 1960’s due to colonial slavery‚ the industrialization of a global economy‚ and an increase in tea consumption. Sugar was introduced
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The Sugar Ad a) The target audience at a first glance seems to be mothers who are deciding food for their children. The title of the advertisement asks‚ “Which would you rather put on your kids’ cereal?” This question is in large bold letters which is directed towards mothers because‚ generally speaking‚ mothers are often the ones to prepare meals‚ buy groceries‚ and set the table for the family. Consequently‚ mothers are more often concerned than fathers with what their children eat. However
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Modernization from Consumption of Sugar According to Wikipedia‚ “modernity” is defined as a post-traditional period that is marked by the move from feudalism towards capitalism and industrialism. From the sixteenth century through the nineteenth century‚ many countries and economies progressed towards a more modern environment. Many factors contributed to the push for modernity; however‚ the sugar industry exhibited major influence throughout the world. Once sugar cane was established in the Caribbean
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Diffusion and osmosis are processes that are a constant in our lives‚ even though many don’t realize it. Medicaments such as Fervex can be drunk only after diffusion has taken place and the powder granules have diffused into the hot cup of water. On the other hand‚ every day we become unintentional witnesses of osmosis when the roots of the plants try to suck up the water from the soil (1). The purpose of this lab is to show clearly in an understandable way how diffusion and osmosis happen and to
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of this molecular movement. Diffusion is the random movement of molecules from an area of higher concentration to areas of lower concentration. Osmosis is a special kind of diffusion where water moves through a selectively permeable membrane that only allows certain molecules to diffuse though (Lab Manual 7e‚ 2010). Diffusion or osmosis occurs until dynamic equilibrium has been reached. This is the point where the concentrations in both areas are equal and no net movement will occur
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that understanding very well. Osmosis and Water Potential in Potato Tissue Melanie Shadish‚ Rob Harris‚ Patricia Tellekamp Water appears to cross the differentially permeable membrane of potato cells by a process called osmosis. The measure of the energy involved in osmosis is called water potential. Since water must lose energy as it moves by osmosis‚ water must move from an area of greater potential to an area of less water potential‚ until the water potential on either side of the membrane
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