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Ap Biology Lab Report

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Lab 1 Diffusion, Osmosis, and Water Potential of Glucose Problem: What effects will glucose have on diffusion, osmosis, and water potential? Background: All living things have certain requirements they must satisfy in order to remain alive. These include exchanging gases (usually CO2 and O2), taking in water, minerals, and food, and eliminating wastes. These tasks ultimately occur at the cellular level, and require that molecules move through the membrane that surrounds the cell. There are two ways that the molecules move through the membrane: passive transport and active transport. Diffusion is the movement of molecules from a region in which they are highly concentrated to a region in which they are less concentrated. Diffusion occurs when a system is not at equilibrium. Several factors affect how fast a molecule will diffuse. The first of these is the kinetic energy of the molecule, which is most frequently measured as the temperatu...

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