L3cellsII_sp10

L3cellsII_sp10 - Portions of chapters 6, 9, & 10Lecture...

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Cells-IIBulk Transport Exocytosis:Secretion of cellularcontents to the outside of the cell by fusion ofvesicles to the plasmamembrane Endocytosis: Uptake of extracellularmaterial into the cell o Phagocytosis o Pynocytosis o Receptor-mediated endocytosis The Endomembrane System Cell Surfaces Cell wall o Plants, prokaryotes, fungi, and some protists o Hasmultiple functions o Thickness and chemical composition differs from speciesto speciesand among celltypes within a plant. o In plants, itprotects thecell, maintains its shape, preventsexcessive uptake ofwater, and supports theplant against the force of gravity Although animal cells lack a cell wall, they havean elaborateextracellularmatrix (ECM) o Influence the behavior of the cell The Cell Wall Primary cell wall Middlelamella o Glues adjacent cellstogether with sticky polysaccharides Secondary cell wall o Protection and support Plasmamembrane Plasmodesmata o
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This note was uploaded on 02/22/2010 for the course BIO 183 taught by Professor Parks during the Spring '07 term at N.C. State.

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L3cellsII_sp10 - Portions of chapters 6, 9, & 10Lecture...

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