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11 Transport in Cells S

This worksheet explores how water moves in and out of cells through osmosis. Using a model with sugar and water molecules, it examines selectively permeable membranes and helps students analyze molecule movement, ratios inside outside the cell.

Daniel Miller
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Transport in CellsHow d o water molecules move in and out of cells?Why? ________________________________________________________Water accounts for over 70% of the human body. If water levels arc not regulated and maintained in anorganism the consequences can be disastrous. Cells and tissues may swell, blood cells burst, or the brainmay expand so much it pushes on the skull, leading to brain damage and death. So what exactly is theprocess that allows organisms to regulate and maintain their water content?Model 1 - Movement of Water In and Out of CellsWater molecules (solvent)Selectively permeable membraneI. A solution consists of a solute and a solvent mixed together. For the solution in Model I identifyand provide the symbol for thed.solute.b.solvent.vxxUc2. Consider the size of the sugar and water molecules in Model I. Which molecules in the diagramin Model 1 are able to move through the selectively permeable membrane?Water3. Complete the table below by counting the molecules in Model 1.are- srmllerInside the CellOutside the CellNumber of sugar moleculesLwNumber of water moleculesi FRatio o f water to sugar1 . 4r-iTransport in Cells1

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Subject
Biology

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