membránátjutás
Membránátjutás refers to the process by which substances cross biological membranes. These membranes, primarily composed of lipid bilayers, act as selective barriers, controlling the passage of molecules into and out of cells and organelles. There are several mechanisms by which membránátjutás can occur, broadly categorized as passive and active transport.
Passive transport does not require the cell to expend energy. It includes simple diffusion, where small, lipid-soluble
Active transport, on the other hand, requires the cell to use metabolic energy, typically in the form