Write TRUE if the statement is correct, FALSE if otherwise. 11. Both fats and oils are mixtures of esters containing both saturated and unsaturated compounds. 12. Fats and oils are esters made from glycerol and long chain carboxylic acids. 13. Potassium iodide is used as a solubilizing agent. 14. The greater the iodine number, the greater the number of double bonds. 15.Butter, beef fat and lard have high iodine numbers.

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Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.