BIOL3149 Study Guide - Quiz Guide: Integral Membrane Protein, Facilitated Diffusion, Glycerol
Document Summary
Used for molecules too large or too polar to diffuse on their own. Uses the concentration gradient of a compound to move it across the membrane from a higher concentration to a lower concentration: equalizes the internal and external concentrations of a solute. Aquaporin channel, transports water and small polar molecules like glycerol. Glycerol transport is performed by glpf an integral membrane protein in e. coli: glycerol is important for energy ad building phospholipids. When the concentration of glycerol inside the cytoplasm = concentration of glycerol outside of the cell, the glycerol can be released. Can take molecules from outside the cell and concentrate them inside, it"s the ability to import nutrients against their natural concentration gradients. Form of active transport where the energy of one chemical gradient is exchanged for another: the most common type of chemical gradient used is that of ions.