In biology glycerol can be used to form lipid. For example

In biology glycerol can be used to form lipid. For example 1 glycerol molecule with 3 fatty acid molecules (can be the same or different) can form 1 triglyceride (glyceryl tristearate – C57H110O6) by condensation releasing 3 water molecules. If one of the fatty acid is replaced by a phosphate group then a phospholipid instead of triglyceride molecule will be formed.The phosphate head’ is hydrophilic or water-loving the ‘fatty acid tails’ are hydrophobic or water-hating. Phospholipid is used to form cell membrane and membrane of organelles which is a phospholipid bilayer with some membrane proteins. A cell membrane is differentially permeable which allows osmosis take place. For triglyceride see http://www.biotopics.co.uk/as/lipidcondensation.html

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