Leaving Certificate Biology Notes: Diffusion Osmosis
Updated: Oct 26, 2024
Keywords: Leaving Certificate study notes, Leaving Certificate Biology notes, diffusion, osmosis, passive transport, concentration gradient, semipermeable membrane, osmotic pressure, equilibrium, diffusion rates, water movement.
Keywords: Leaving Certificate study notes, Leaving Certificate Biology notes, diffusion, osmosis, passive transport, concentration gradient, semipermeable membrane, osmotic pressure, equilibrium, diffusion rates, water movement.
These notes are a solid refresher, especially the bit about equilibrium not meaning movement stops — that tripped me up in the mocks until I pictured it as particles still crossing the membrane equally in both directions. The side-by-side of diffusion and osmosis is handy too, since exam questions love making you compare the two. Speaking of things crossing over, this reminds me of how a low quality image can still get the point across even when the details blur together, kind of like a rough sketch of a cell diagram before you label it properly. Anyway, cheers for keeping these short and readable, way easier to revise from than a wall of text.
These notes are exactly the right length for revision. The distinction between diffusion down a concentration gradient and osmosis across a semipermeable membrane is where most students lose marks, so seeing them side by side helps. Worth adding a line on why equilibrium does not mean movement stops. For study breaks my class swears by Choicer Voicer Free, a browser game, which beats scrolling and gets them back faster.
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