BIO 1140 DGD feb 10 - BIO 1140 DGD Feb. 10, 2011 Review:...

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BIO 1140 DGD Feb. 10, 2011
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Review: Plant cell wall and plasmodesmata Plant cell wall (cellulose microfibrils, hemicellulose, pectin)  rigidity, protection, regulates permeability Rosettes (six membered ring)  used to create the cellulose microfibrils  glucose subunits added to the end of a growing molecule  “walk” along MTs Plasmodesmata  cytoplasmic channels that pass through the cell walls of adjacent cells  cell-cell communication  can dilate
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ECM and cell-cell connections of animal cells Molecules involved  collagens, elastins; proteoglycans; fibronectin Adhesive  adherens junctions (main type of anchoring junction; link to MFs), desmosomes (stronger than adherens; link to IFs) Tight junctions  claudins, occludins Gap junctions (animal equivalent of plasmodesmata)  “links” cytoplasms
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Describe the components that make up a plant cell wall and the role of each in the wall’s structure and function Made of cellulose microfibrils which are
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This note was uploaded on 03/30/2012 for the course SCIENCE BIO1140 taught by Professor Fenwick during the Spring '09 term at University of Ottawa.

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BIO 1140 DGD feb 10 - BIO 1140 DGD Feb. 10, 2011 Review:...

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