A. Test for Unsaturation To 3 drops of toluene add 3 to 4 drops of 1% potassium permanganate solution and shake. Give the results. B. Take 10 drops of toluene and add 2-3 drops of a solution of bromine in carbon tetrachloride until a faint color is obtained. Divide the solution into two separate vials. Expose one vial in sunlight, and keep inside your locker the other. Cover both vials. Compare their appearance after 10 minutes. Interpret the results. Give the equation. C. Demonstration (to be performed inside the hood) Take 2 test tubes and to each add 5 drops of liquid bromine. To one test tube, add a pinch of a halogen charrier (iron fillings). To both test tubes, add 3 drops of toluene. Expose a moist blue litmus paper to the fumes. Describe and interpret the results. Give the equation

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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.