Cell membrane structure transport 2 Ilustración e icono

Cell membrane structure transport 2. This schematic depicts a wavy phospholipid bilayer with embedded proteins mediating transmembrane transport. At the molecular level, phospholipids assemble into a bilayer forming the plasma membrane (PM), an ultrastructural component of the cell boundary, while integral membrane proteins (IMPs) span both leaflets. In cell biology, biochemistry, and membrane physiology, these IMPs function as channels or carriers that permit selective movement of ions and small solutes and participate in signal transduction. The illustration represents a cellular anatomical structure located at the cell periphery, showing cytoplasmic and extracellular faces.