4. Cell wall is a term used to describe the cell membrane.

Actually, the cell wall and cell membrane are distinct structures! The cell wall is a rigid outer layer found in plants, fungi, and some bacteria, providing structural support and protection. It's made primarily of cellulose in plants. In contrast, the cell membrane is a flexible barrier that surrounds all cells and controls the movement of substances in and out. Think of the cell wall as the fortress wall, while the cell membrane serves as the gateway! While studying cells, remember that not all organisms have a cell wall. For instance, animal cells only have a cell membrane, which allows for greater flexibility. This is one reason why animals can have varied shapes and forms, adapting to their environments in creative ways!