Cell Membrane Definition For Kid. Cell membranes according to cell theory, cells are the main unit of organization in biology. The cell membrane is a thin structure with pores, or holes.
Bacteria, fungi and plants have cell walls. It protects the integrity of the cell along with supporting the cell and helping to maintain the cell's shape. Cell membrane lesson for kids:
This cell wall gives shape and makes it rigid, it also allows the free flow of substances.
It is made up of proteins and lipids and often contains molecular receptors. It is made up of cellulose. Also called cytomembrane , plasmalemma , plasma membrane. The cell membrane separates the cell from the surrounding interstitial fluid, the main component of the extracellular fluid.