BISC207 Lecture 1: Lipids & Membrane

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC207
• Professor: Trimby,Christopher Matthew

Document Summary

Warm up: the graph shows how the relationship between self-discipline and iq are not directly correlated. The self discipline score increases at a steeper rate than the iq does and intersects at the 2nd highest quintile. Academic performance is measured by gpa and the relationship between self discipline and iq. *model of molecules from slide prokaryotic v. eukaryotic* Polar head group- hydrophilic, dissolves well in water, interact with water. Tails- hydrophobic, orient towards each other to avoid water, energetically unfavorable. Sealed compartment formed (sphere-like) by phospholipid bilayer is energetically favorable due to the fact that tails are completely hidden from water. Fick"s law of diffusion *not used numerically but used realistically* Membrane permeability is dependent on what molecule and what state it is in in that particular moment in time. Fixed part: the bigger the size the higher difficulty, how well it interacts with lipid molecules. Small hydrophobic molecules- cross lipid bilayer with no help or energy required.