Create a Schematic Diagram   Delivering an aliquot and dilution 1. Using a serological pipette, transfer accurately a 10-ml aliquot of the previously prepared NaCl solution into a 100-ml volumetric flask, then dilute to mark using distilled water. 2. Put a stopper on the volumetric flask. Then invert the glassware up and down around five times, making sure there are no leaks. 3. Put the diluted solution in a reagent bottle, then properly label the solution. Note the concentration of the solution. Show your reagent bottle to your instructor for checking.

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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.