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5 Cards in this Set
- Front
- Back
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Sterols |
-steroid alcohol - lipid - complex alcohol molecules based on 4 carbon ring structure with polar OH group - dual hydrophilic hydrophobic structure |
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Cholesterol |
- sterol - made in liver and intestines - important role in cell membrane as hydroxyl group at Periphery of membrane between phospholipids which adds to the stability of the membrane and regulates fluidity - make vitamin D steroid hormones and bile |
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Roles of lipids |
- membrane formation - creation of hydrophobic barriers - hormone production - waterproofing in bird Feathers and leaves - electrical insulation for impulse transmission - long term energy storage - found under skin and a van vital organs: - thermal insulation- cushioning to protect vital organs- buoyancy for aquatic animals |
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Suffocation of lipids emulsion test |
Sample is mixed with ethanol then Mixed and shook with water if emulsion forms which is a light white layer on top of the solution there's lipids |
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Food synergy |
Nutrients do not work in isolation but as part of a combined effect of a whole range of nutrients |
