-1-Figures for Lecture 430 August 2010 (P. J. Hollenbeck)BIOL 231(Be sure to also download the notes after lecture)(A) LIPIDSSteroids like cholesterol have planar ring “backbones,” meaning that all the carbons in the ringsshown here in green lie nearly in one plane:The other lipids we will consider, phospholipids, have a glycerol backbone. Two fatty acids arecoupled to glycerol by ester linkages, and a polar head group is coupled to the third carbon ofglycerol via a phosphodiester linkage. This is a diagram of phosphatidylcholine:
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