Cell Diversity and Cell Movement vacuoles- central storage compartment • plants contain central vacuole to store water, sugars, ions, pigments • applies pressure to the plasma membrane, increasing surface area-to-volume ratio • also found in some types of fungi/protists cell walls- found in plants, fungi, some protists • protect/support cell • chemically/structurally different from prokaryotic cell walls • cellulose found in plant/protist cell walls • chitin found in fungi cell walls • primary walls- plant cell walls laid down when the cell is still growing • middle lamella- sticky substance holding adjacent plant cells together • secondary walls- deposited inside the primary walls of fully expanded cells extracellular matrix (ECM) - substitute cell wall used by animals • composed of glycoproteins • contains lots of collagen (same protein found in nails/hair) • web of collagen, elastin, proteoglycan form a protective layer over the surface • fibronectin- attaches the extracellular matrix to the plasma membrane
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.