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Added to this they also help in determining the shape of the cell, movement of the cell, and transportation of the cytoskeleton structures play an very important role in the direction of cell division and differentiation. Many of the components also help in chromosomal movement and cytokinesis.
Glucose is an example of large molecule that is moved into a cell in this manner. 1  Movement of substances in or out of the cell depends upon concentration gradient. 2  Carrier proteins that assist in movement of these substances are specific for each type of molecule.