Jonnathan Pineda

What is a Cell?  Make up living things  Carry out activities that keep them alive

What is a Cell Wall?  Protected layer  Found on the outside of plasma membrane  If you put a balloon in a box, the box serves a cell wall protecting the balloon

3 Layers  Middle Lamella- first layer formed, composed of peptic compounds and protein  Primary Wall- second layer formed  Secondary Wall- last layer, is extremely rigid, provides compression strength

Where is the Cell wall found?  Plants  bacteria  Achaea  fungi  algae  Different types of cell wall for each

Cell Wall in Plants, Archaea,, bacteria,  Plants  Primary Walls  Secondary walls  Archaea  Composed of a S-Layer and lack peptidoglycan o Bacteria  Composed of disaccharides and amino acids

What are Cell walls Made of?  Plant cell wall - cellulose  Bacterial cell wall- peptidoglycan  Fungi cell wall- chitin and other polysaccharodes  Archaea cell wall- isoprenyl ether  Algae cell wall- cellulose

Its Function?  Gives it a shape  Protect cell  Acts as a pressure vessel  Prevent over expansion when water enters the cell

Reference  Raven, P., G. Johnson, K. Mason, J. Losos and S. Singer Biology, 10th ed. McGraw-Hill, Boston.