Cell Membrane Definition Class 8. Cell membrane definition, the semipermeable membrane enclosing the cytoplasm of a cell. The cell membrane, also known as the plasma membrane, is a double layer of lipids and proteins that surrounds a cell.it separates the cytoplasm (the contents of the cell) from the external environment.
It gives definite shape to the cell. Solutions make you learn the difference between eukaryotes and prokaryotes. A cell wall is a rigid structure present outside the plant cell.
It protects the integrity of the cell along with supporting the cell and helping to maintain the cell's shape.
Cell was discovered by robert hook. It gives definite shape to the cell. Cell membrane is made up of lipids and proteins. The nucleus is a membrane based organelle that is found in eukaryotic cells.