Final answer:
The special alignment of phospholipids in an aqueous environment leads to the formation of lipid-bilayer structures such as micelles, lipid-bilayer sheets, vesicles, and liposomes.
Step-by-step explanation:
The special alignment of phospholipids in an aqueous environment leads to the formation of lipid-bilayer structures such as micelles, lipid-bilayer sheets, vesicles, and liposomes. These structures are created due to the amphipathic nature of phospholipids, which allows their hydrophobic tails to face each other and their hydrophilic heads to face the water. The lipid bilayer is a double-layered phospholipid barrier that separates the water from other materials on both sides.