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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. 2014. Biology, 10th ed. McGraw-Hill, Boston.