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A-Level Biology OCR A

Functions Cholesterol Membrane Attracted List Relate Properties Important

Front List the functions of cholesterol & relate them to their properties.
Back Functions of cholesterol
  • Important precursor for: steroid hormones, fat soluble vitamins, bile salts
  • Found in phospholipid bilayer for membrane stability and fluidity - hydroxyl group is attracted to phosphate heads & carbon rings attracted to hydrophobic tails of phospholipids in the center of membrane - fits between them which prevents them aligning too closely & holds them together at the same time

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