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Unformatted text preview: ___ Functions as a barrier, blocking passage of material between cells from one side of epithelial cell layer to the other ___ Protein channels that connect cells and permit the rapid passage of small materials between the cells ___ Connects plant cells, which are otherwise isolated by their surrounding cell walls. 7. How are gap junctions and plasmodesmata similar? How are they different? 8. What are the main components of the extracellular matrix? Where are they made and how do they come to be in their final location? 9. How is the extracellular matrix attached to a cell? List the molecules involved. 10. Describe the basic structure of a plant cell wall. 11. What is the function of the middle lamella?...
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- Fall '08