If it's an animal cell, it's cell membrane. If it's a plant cell, it's cell wall. The cellular membrane is made up of various proteins found in a fluid of phospholipid molecules that create a bilayer The bilayer is formed when the polar water molecules repel the non-polar tails of the phospholipids causing them to stack up and form a non-polar interior. The non polar of the interior impedes the passage of water soluble substances. The bilayer sheets contain other proteins that serve various functions to allow passage in and out of the cell and help make up the membrane.
The cell membrane is a organelles that is boundary between a cell and its environment.
Plasma membrane or cell membrane
The plasma membrane is the cellular structure that separates the cytoplasm from the external environment. It is a phospholipid bilayer embedded with proteins that selectively controls the passage of molecules into and out of the cell.
The cell membrane.
The Cell Membrane forms the outside boundary that separates the cell from its environment.
double layer phospholipids forms boundary between cell and surrounding environment and controls passage of materials into and out of cell
In cells without cell walls, the cell membrane forms an outside boundary that separates the cell from its environment!
The cell membrane.
The cell membrane.
cell membrane
The cell membrane.
The cell membrane.