BIOL 1107 Lecture Notes - Lecture 6: Unsaturated Hydrocarbon, Peanut Butter, Lipid Bilayer
Document Summary
Fluid membrane: not hard to go through until start adding other solutes and change the temp, increase temp separate, melt the membrane, rate that substance move through is very important. Water readily moves through phospholipid bilayer but bc of size it can easily move through. Can add channel protein to move more water through the layer at faster rate. Kidneys have the most channel proteins to move water faster. Trachea, lungs (epithelial) tissue: nature of structure can influence permeability, native phospholipid bilayer can control. Small nonpolar molecules can readily move through (o2, Small uncharded polar molecules move through slowly. Large uncharged polar molecules do not move through. Need glucose to move through by making protein channels that facilitate the movement of these molecules to let them through. Channel protein built only to let glucose through: more control/regulation. Rare that you can see phospholipids bc of the amount of channel proteins in it.
