Jonnathan Pineda. What is a Cell? Make up living things Carry out activities that keep them alive.
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Transcript of Jonnathan Pineda. What is a Cell? Make up living things Carry out activities that keep them alive.
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
peptidoglycano 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.