Osmosis Lab Conclusion Osmosis is the transfer of water across a cell membrane down its concentration gradient. Osmosis can happen rapidly through hydrophilic proteins called aquaporins, which are specialized for the transport of water, or slowly through the amphipathic phospholipid bilayer. The diffusion of water across a membrane is determined by solute concentration (solute potential) on both sides of the membrane. Water naturally diffuses from areas of high water potential to areas of low water potential. Water potential lowers and becomes more negative as more solute is added. In the Osmosis lab, instead of using cell membranes, we used perforated dialysis bags with different concentrations of sucrose ranging from 0 moles (distilled water, or dH 2 O) to a 1 molar solution of sucrose. As hypothesized, the more solute added to the dialysis bag, the more water is diffused by osmosis into the bag due to differences in water potential. Therefore, the dialysis bag increases in size as more solute is added when immersed in water. The solutions utilized in
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