Study of Osmosis Along A Free-Energy Gradient
STUDY OF OSMOSIS ALONG A FREE-ENERGY GRADIENT USING SUCROSE AND DIALYSIS TUBING Osmosis is diffusion of water across a differentially permeable membrane in living organisms and is vital to the functioning of living cells. Osmosis can be simulated by using dialysis tubing; each bag represents an individual cell. This experiment was to determine the flow of osmosis in various types of environments: hypertonic, hypotonic, and isotonic. In order to do this, each dialysis bag was filled with 10 ml of 1%, 25%, or 50% sucrose respectively, weighed, and then placed in two beakers of 50% or 1% sucrose concentrations. The movement of water was tracked by weighing the bags 4 times in one hour. It was found that bags with a lower concentration of sucrose than the environment (Bag A) lost weight. Bags with higher concentrations of sucrose (Bags C&D) gained weight. The bag with the same concentration as the beaker (Bag B) also gained weight. Thus, water moved from areas of low sucrose concentration to areas of high sucrose concentration, which supports the hypothesis that osmosis moves from hypotonic solutions to hypertonic solutions. The cell is the basic unit of life. Without cells, we would no
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Some common words found in the essay are:
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Approximate Word count = 1935
Approximate Pages = 8 (250 words per page double spaced)
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