BIOL 1201 : Biology Notes2 For Exam 2
Document Summary
Like people in an elevator 1 person can stand anywhere he/she wants. More people, they can stand anywhere except where more people are. Polar particles have hard time passing phospholipid layer. Negative inside cell, then positive will be attracted toward inside. Individual molecules move randomly, but the net effect is non-random. The net movement of water across (through) a semi-permeable membrane. If completely permeable, then everything will move, in which case, only diffusion would happen. Figure out the things that dissociate first, since they can move past the semi-permeable membrane. Add number of moles of each molecule on each side. Finally, whichever side has fewer moles of molecules, water will move in that direction. Then split these evenly between the two sides. Water always freely permeable (even though it"s polar) Movement of substances other than water more concentrated equal concentration less concentrated. Permeases: (molecules that are not permeable or that move slowly)
