Meaning of cell wall
What is cell wall:
A cell wall is a tough membrane that protects the contents of cells from algae, fungi, plants, bacteria, and archaea. In contrast, animal cells do not have a cell wall.
Although the name may give the impression that it is an insurmountable wall, the cell wall is dynamic, so it mediates the relationships of cells with the environment. This means that this membrane determines what can enter or leave the cell.
Cell walls are responsible for shaping cells, participating in growth and resisting osmotic force. Depending on the type of element (algae, fungi, bacteria or plants), cell walls will have a characteristic conformation.
Cell wall in plants
Plant cell walls are made of cellulose. In the case of plants, the cell wall has the function of preventing dehydration, protecting the plant from insects and pathogens, maintaining the shape of the plant, preventing the plant from swelling too much in the presence of excessive water and helping to grow to the plant.
Cell wall in bacteria
The cell walls of bacteria are made of peptidoglycan. In bacteria, cell walls must have strength and flexibility at the same time to prevent cell lysis on the one hand, and to facilitate the transport of substances through the cell membrane. This membrane is semi-permeable.
Cell wall in fungi
The cell walls of fungi are made up of chitin, glycans, mannan and glycoproteins. In fungi, the cell walls are responsible for taking care of the osmotic pressure and interacting with the environment.