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Chapter 3 of 13 · Biology 1

Membrane Structure and Cellular Transport

4 lessons in this chapter. Work through them in order, or jump to the one you need.

  1. The Fluid Mosaic Model of the Plasma Membrane
  2. Passive Transport: Diffusion, Osmosis, and Facilitated Diffusion
  3. Active Transport: Pumps, Gradients, and the Na⁺/K⁺ ATPase
  4. Bulk Transport: Exocytosis and Endocytosis
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