Mastering Biology Study Set with Questions and Answers

Desmosomes membrane protein complexes that strengthen the adhesion between adjacent animal cells, like rivets, to protect against pulling forces; bind cells together and function as anchors for fibers in the cytoskeleton Gap junctions small channels that form across the plasma membranes of adjacent animal cells; especially important in intercellular communication; help coordinate activities of adjacent cells Tight junctions membrane proteins that create a watertight seal between animal cells to connect them and to keep fluid from crossing barriers Plasmodesmata small channels between cells that are otherwise surrounded by walls; enable movement of water and solutes between plant cells Cellulose a polysaccharide that is used to synthesize plant cell walls, which protect cells and help maintain their shape