Biochemistry 2280A Lecture Notes - Lecture 7: Phospholipid, Sphingosine, Glycerol
23 Apr 2017
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Describe and distinguish between different classes of lipids. Describe the biological role of the different classes of lipids. Explain the properties of lipid bilayers, and why certain lipids form bilayers. Predict the effect of changes in composition of a lipid bilayer on its uidity. Ldl = low-density lipoprotein, carries cholesterol to tissues. Hdl = high-density lipoprotein, scavenges cholesterol from tissues. When we put a bunch of these in an aqueous solution, they will cluster together . Diffusion rate determined by: temperature, length of chains, degree of unsaturation, cholesterol concentration. Can move around wiggle, rotate, etc. Hydrophilic part doesn"t want to go into a hydrophobia region. This means they don"t ip op very often. Rate of diffusion does impact uidity of bilayer. The longer the chain, the slower the motion. The shorter the chain, there are fewer attractive forces and the faster they can move. More chains with double bonds, you increase uidity.
