Pure aspirin has a melting point of 135-136°C. Before the melting point was determined - if one crystal sample contains methanol due to incomplete solvent removal, and the other crystal sample contains water by absorbing moisture in the air - what effect could these have on the observed melting points from the two samples?

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A:

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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.