Biophysics · MU Sofia
Covers free diffusion of ions, introducing the Nernst-Planck equation and the dimensionless potential, then moves to non-free diffusion through a pored membrane. It explains that transport is described with Fick's law under two simplifying restrictions: concentrations stay constant over time, and concentration varies linearly with distance. Most of the content is conveyed through six diagrams with little accompanying text.
Inside: 1 section · 6 labelled pictures · 14 flashcards · 1 min
Topic 15 of 30 in the MU Sofia syllabus for Biophysics (Medicine, Year 2). The free AceMed note covers it in 1 section, about 59 words (1 min of reading), with 14 flashcards.
Free diffusion of ions - the Nernst-Planck equation, dimensionless potential. Non-free diffusion through a pored membrane.
Non-free diffusion through a pored membrane:
To describe the transport through a pored membrane we use Fick's law, which we simplify with the following restrictions:
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