The fortnight Anne spent in Bolingbroke was a very pleasant one, with a little under current of vague pain and dissatisfaction running through it whenever she thought about Gilbert.
Cell wall. Many types of prokaryotic and eukaryotic cells have a cell wall. The cell wall acts to protect the cell mechanically and chemically from its environment, and is an additional layer of protection to the cell membrane. Different types of cell have cell walls made up of different materials; plant cell walls are primarily made up of cellulose, fungi cell walls are made up of chitin and bacteria cell walls are made up of peptidoglycan.
It's OK to be jealous. Like the cell walls in bacteria, fungi, algae, and some Archaea (single-celled organisms), plant cell walls are found just outside the plasma membrane and provide structure and protection to the cells. The Cell Wall: Not Yours. Transmission electron micrograph source: Paungfoo-Lonhienne et al. PLoS ONE. 2010; 5(7).