Lecture 4- Larger Biological Molecules A

Hydrophobic doesnt like water carboxyl at one end

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Unformatted text preview: s Adjacent molecules cant pack as close together Types of lipids Types of lipids Plant and fish oils-______________ • liquid at room temperature • cis double bonds prevent the molecules from packing closely together Animal fats – mostly _____ at room temperature Trans fats cis and trans geometric isomers Trans fats _____________of vegetable oils solidifies them at room temperature •produces saturated fats and unsaturated fats with trans double bonds- trans fats Trans fats Elaidic acid Phospholipids Two fatty acids, and a phosphate group (charged) attached to a glycerol Small molecules can be attached to the phosphate groups Phospholipids Triacylglycerol G l y c e r o l Fatty acid Fatty acid Fatty acid Phospholipids G l y c e r o l Phosphate Fatty acid Fatty acid Small polar molecule Phospholipids Small polar molecule Phosphate Glycerol Fatty acids Phospholipids Phospholipids •self-assemble into a bilayer, in water •hydrophobic tails pointing toward the interior •____________ Phospholipids Steroids •carbon skeleton with 4 rings e.g. cholesterol synthesized in the liver cell membranes precursor to other steroids such as sex hormones Steroids...
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This document was uploaded on 02/20/2014 for the course BIOL 1020 at Manitoba.

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