The Cellular Organization And Extracellular Environments Of Plants And Animals Are Very Different

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The Cellular Organization And Extracellular Environments Of Plants And Animals Are Very Different

. Drag the labels to their appropriate locations in the table below. Use only pink labels for the pink targets. Labels may be used more than once. 1) Membrane protein complexes that strengthen the adhesion between adjacent cells, like rivets, to protect against pulling forces. 2) Small channels that form across the plasma membranes of adjacent cells; especially important in intercellular communication. 3) Membrane proteins that create a watertight seal between cells. 4) Small channels between cells that are otherwise surrounded by walls; enable movement of water and solutes between cells. 5) A polysaccharide that is used to synthesize cell walls, which protect cells and help maintain their shape. 6) Long fibers of protein found in the extracellular matrix that provide structural support for cells.
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1) desmosomes / animal 2) gap junctions / animal 3) tight junctions / animal 4) plasmodesmata / plant 5) cellulose / plant 6) collagen / animal (A primary distinction between plant cells and animal cells is the fact that plant cells are surrounded by cell walls. If it were not for plasmodesmata, the cell walls would essentially imprison the plant's cells, making intercellular communication and the distribution of nutrients nearly impossible. Animal cells have a variety of intercellular junctions, including tight junctions, desmosomes, and gap junctions. The gap junctions of animal cells are most similar to the plasmodesmata of plants. Gap junctions tend to be limited to tissues that require rapid and coordinated signal relay systems, such as heart muscle; they play no role in nutrient distribution.)
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