C. The Dynamic Nature of the Endomembrane system Most organelles are part of a dynamic system in which vesicles move between compartments o Biosynthetic pathways move proteins, carbohydrates and lipids within the cell Secretary pathways discharge proteins from cells Endocytic pathways move materials into cells Sorting signals are recognized by y receptors and target proteins to specific sitesC. The Dynamic Nature of the Endomembrane System vMost organelles are part of a dynamic system in which vesicles move between compartments. vBiosynthetic pathways move proteins, carbohydrates and lipids within the cell. vSecretary pathways discharge proteins from cells. vEndocytic pathways move materials into cells. vSorting signals are recognized by receptors and target proteins to specific sites