Cell Membrane Definition And Function

Like a drawbridge intended to protect a castle and keep out enemies the cell membrane only allows certain molecules to enter or exit.

Cell membrane definition and function. The cell membrane is the outer covering of a cell within which all other organelles such as the cytoplasm and nucleus are. The cell membrane gives the cell its structure and regulates the materials that enter and leave the cell. It is also known as the cell surface membrane or plasmalemma.

It controls the movement of substances in and out of the cells. The plasma membrane comprises lipids and proteins. It is semi-permeable and regulates the materials that enter and exit the cell.

Cell membrane thin membrane that surrounds every living cell. The plasma membrane protects the cell from damage caused by environmental exposure. Cell membrane is a biological membrane that separates the interior of the cell from the outside space and protects the cell from its environment.

Cell Membrane is a boundary of a cell covered with cell walls. The plasma membrane is the cells outermost layer in mammals although it is found behind the cell wall in plants fungi and some bacteria. Proteins and lipids are the major components of the cell membrane.

The cell membrane is present in all the cells. Cell Membrane surrounds the cytoplasm and other organelles in it. The cell membrane consists of a lipid bilayer that is semipermeable.

It is a selectively permeable barrier meaning it allows some substances to cross but not others. A cell membranes phospholipids and proteins arranged in a bilayer give it semi-permeability allowing some. The cell membrane consists of a lipid bilayer including cholesterols that sit between phospholipids to maintain their fluidity at various temperatures.