Complete the following table. Use the information provided in the chart – not a periodic table determine atomic masses, but you may refer to a periodic table to name the element. A tomic Number A tomic E lement Protons Neutrons E lectrons Mass 82 125 18 40 Barium 137 112 50

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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.