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notes-6-lipids-part-2

notes-6-lipids-part-2 - Phospholipids Structure Glycerol...

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8/27/10 1 Phospholipids Structure •Glycerol backbone (like TAG) •One fatty acid replaced with phosphorus Functions •Cell __________ •__________ and transportation of lipids Cholesterol Structure •Multi-ringed •No glycerol backbone •Insoluble in water Functions •Cell __________ •Sex hormones •Vitamin D •__________ Lipoproteins Lipoproteins: ______ of lipids (TAG and cholesterol) surrounded by a ______ of protein and phospholipids __________ lipid transport vehicles 4 types… 1) Chylomicrons (dietary fat) 2) VLDL 3) LDL 4) HDL (liver-synthesized fat)
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8/27/10 2 Chylomicrons What’s in ‘em? •__________ Lipoprotein__________ •Breaks down TAG in chylomicrons Outcomes •Used for energy •Stored as fat (adipose tissue) Very Low Density Lipoproteins (VLDL) What’s in ‘em? •__________ •__________ Lipoprotein __________ •Removal of TAG •Cholesterol remains •Less TAG = more dense = LDL… Low Density Lipoproteins (LDL) What’s in ‘em? •__________ __________ pathway •Cells use cholesterol for growth, maintenance __________ pathway •WBCs remove excess cholesterol from blood •__________
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