BSCI-1510 Lecture Notes - Lecture 9: Glucose Transporter, Bacteriorhodopsin, Antiporter

• School: Vanderbilt University
• Department: Biological Sciences
• Course: BSCI-1510
• Professor: Singleton Charles

Document Summary

Acetolcholine: is particularly iteresteing. similar to nicotine. molecules function in similar ways. Nicotin is much more hydrophobic. crosses membranes more easily. imitates acetylcholin out of control. Nicotine travels accross all membranes causing addiction. in higher concentration shuts down th nervous system. Active transport: requires energy. tyransports molecules to a higher energy sxtate. up a concentration gradient. they have to be pumped accross the membrane. all cels have high k concentration and low na concentration. Wen need pumps to maintain these gradients. molecules are noit going to flow from low concentration to hight voncentration. We need a specific bnding site and mechanism and energy. specific binding site for transported molecules and ions. There has tp be a protein structural change in order to transport just life facilitated siffusion. We need energy and specific binding sites and structural change during transport. Energy can come from a variety of sources.