Are cell membrane and cell wall the same thing?
The cell membrane has a complex and highly organized structure. Much of it consists of a double layer of phospholipid molecules, called the phospholipid bilayer. Embedded in this bilayer are proteins of various kinds: enzymes, receptor proteins, and transport proteins (channel proteins and carrier proteins). Between them, the phospholipids and proteins regulate the entry and departure of ions and molecules, whereas the cell wall lets almost anything through!
