Phospholipid bilayers (microscopic 3D schematic)
Phospholipid bilayer is a structure composed of two layers of phospholipid molecules and is a fundamental component of the cell membrane. A hydrophilic "head" and a hydrophobic "tail". The hydrophilic head faces the aqueous phase, while the hydrophobic tails approach each other, forming a bilayer structure. Having fluidity, allowing embedded proteins to move within the membrane. Being able to selectively allow certain substances to pass through while blocking others. The phospholipid bilayer isolates the interior of cells from the external environment. Through embedded proteins, phospholipid bilayers can regulate the entry and exit of ions, nutrients, and waste.
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