osmosis - Cell Transport Mechanisms and Permeability:...

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Cell Transport Mechanisms and Permeability: Osmosis Abstract: Osmosis is the passive movement of water across a membrane down its concentration gradient. It is the net diffusion of water across a semipermeable membrane. A semipermeable membrane is a barrier that has holes large enough to allow molecules of water to pass but small enough to block the passage of other molecules. The transferring of water from one area to another will cause that to increase, eventually preventing further water entry. This is when osmotic pressure will take place and apply pressure to the solute which prevents the inward flow of water across the semipermeable membrane. We tested Na+/Cl-, Albumin, and Glucose at different membrane channel sizes to obtain osmotic pressure results. Hypothesis: Solutes will not pass through a membrane if the channel is smaller than the molecule itself, causing osmotic pressure. The independent variable is the MWCO. The dependent variable is osmotic pressure.
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osmosis - Cell Transport Mechanisms and Permeability:...

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