BISC306 Lecture Notes - Lecture 1: Amphiphile, Ion Transporter, Micelle
14 Sep 2016
School
Department
Course
Professor
Document Summary
Lipids & water: hydrophobic particles-water fearing, don"t like to be near water; most lipids, 1) triglycerides-entirely hydrophobic; lipoproteins, 2) fatty acids-form micelles in water, 3) phospholipids-part of structure likes water, part does not; amphiphatic. Water & electricity: conductivity of water is relatively low; not good at conducting electrical signals, electrolytes increase conductivity of aqueous solutions. Battery-o2 gas from anode of cl-, h2 gas from cathode of na+ ion. Ion pumps in cell membrane: ohm"s law. I=1 j of energy to release 1 charge moved (millivolts as unit) Ohms=flow of current in a circuit: factors that determine conductance of a solution: Chemical reactions: concentrations of c and d over a and b, aa+bb cc+dd, substrates products, more enzyme, faster processes, controlling the enzyme, affects specificity of cell, pyruvate lactic acid (ldase enzyme) Enzymes: enzymes have different isoforms, enzyme regulation, gene expression. Inducible-stopping: allosteric regulation-enzyme binds to protein & affects activity; may activate or inactivate; glucose has different effects.
