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Lipids (Types (Fats (or triglycerides or triacylglycerols) (Three fatty…
Lipids
Types
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Phospholipids
- Major component of plasma membrane that surrounds a cell
- Amphipathic
- When dropped into water forms a micelle (hydrophilic phosphate heads face ouside; hydrophobic fatty acids - inside)
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Steroid hormones
- consist of 4 fused rings (3 with 6 C and 1 with 5 C)
- if contain OH - alcohol - sterols
Cholesterol
- Is synthesized in liver
- Precursor of many sex hormones
- Starting material for vitamin D
- Starting material for bile acid (aids with digestion and absorbtion of fats)
- Key component of cell membranes
HDL (high-density) - good, protective effects
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