foszfolipidrétegben

Foszfolipidrétegben is the Hungarian term for "in the phospholipid bilayer". This refers to the fundamental structure of all biological membranes. The phospholipid bilayer is composed of two layers of phospholipid molecules. Each phospholipid molecule has a hydrophilic (water-attracting) head and a hydrophobic (water-repelling) tail. In an aqueous environment, these molecules spontaneously arrange themselves into a bilayer. The hydrophilic heads face outwards, interacting with the watery cytoplasm and extracellular fluid, while the hydrophobic tails are oriented inwards, away from the water, forming a barrier. This arrangement creates a stable, fluid structure that is selectively permeable, controlling the passage of substances into and out of the cell. Embedded within this phospholipid bilayer are various proteins, such as integral proteins and peripheral proteins, which perform a multitude of functions including transport, signaling, and enzymatic activity. The fluidity of the phospholipid bilayer allows for movement and dynamic changes within the membrane, essential for cellular processes.