BIOD27H3 Chapter Notes - Chapter 5: Facilitated Diffusion, Passive Transport, Dynamic Equilibrium
Document Summary
to maintain homeostasis, the body uses mass balance. Equilibrium: homeostasis often refers to the stability of the extracellular fluid compartment (consisting of the plasma and interstitial fluid, dynamic disequilibrium (chemical disequilibrium): state of the two fluid compartments in which the different concentrations of solutes in the. membrane permeability is variable and can be changed by altering the proteins or lipids of the membrane. the size of the molecule and its lipid solubility influence its movement across membranes (large, less lipid-soluble molecules usually cannot pass the membrane unless the cell has specific membrane proteins to transport them or vesicles to move them) passive transport: movement across the membrane not requiring energy input. active transport: movement across the membrane needing energy input. diffusion uses only the energy of molecular movement www. notesolution. com: diffusion: passive movement of uncharged molecules from an area of higher concentration to lower concentration due to random molecular movement, 7 properties:
