Osmosis- definition, types, examples, (Osmosis vs Diffusion)


Osmosis Definition Osmosis is a biophysical process occurring commonly in biological systems where solvent molecules move across a semi-permeable membrane towards a region of high solute concentration. Figure: Osmosis. Image Source: Open Stax (Rice University) and Biology Online. It is a type of passive transport and is directed towards the direction that tends to equalize the solute concentration across a …

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Passive Transport

Passive Transport

Passive Transport Plasma membranes must allow certain substances to enter and leave a cell, and prevent some harmful materials from entering and some essential materials from leaving. In other words, plasma membranes are selectively permeable—they allow some substances to pass through, but not others. If they were to lose this selectivity, the cell would no longer be able to sustain itself, …

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