bio lecture 7

bio lecture 7 - Lecture 7 Guide September 9 More...

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  Lecture 7 Guide September 9 More Macromolecules (and friends) See EXAM 1 READINGS, Chapter 5 (Moodle) Lipids 1. Generally made up of C & H (rarely O); hydrophobic 2. Includes: fats, phospholipids, derivatives (steroids) 3.Functions: energy storage, membrane structure, communication Fats Fatty acid chains: carbon chains which vary in length and number of double  bonds Single bonds between carbons are termed saturated  (with H)   Double bonds between carbons are termed unsaturated   Fats (oils): glycerol + 3 fatty acid chains (triacylglycerols or triglycerides); store  energy: a gram of fat holds twice as much energy as a gram of starch
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  Diet Considerations Hydrogenated fats – (Trans Fat) – natural (“cis”) double bonds are good, “trans”  double bonds are bad Saturated fats – correlated with atherosclerosis – eat foods with unsaturated oils     Phospholipids  (membrane component) General structure: glycerol + 2 fatty acid chains + phosphate(+)
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This note was uploaded on 12/10/2010 for the course BIOL 1201 taught by Professor Wishtichusen during the Spring '07 term at LSU.

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bio lecture 7 - Lecture 7 Guide September 9 More...

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