Final answer:
The movement of vesicles in and out of the Golgi complex is controlled by microtubules, which are integral to cellular motility and transportation of cargo by motor proteins like dynein and kinesin.
Step-by-step explanation:
The movement of vesicles in and out of the Golgi complex is controlled by microtubules. Microtubules are composed of α- and β-tubulin protein monomers and play a crucial role in cell motility, which includes the movement of cellular structures, such as secretory vesicles. Motor proteins like dynein and kinesin, which travel along microtubules, use ATP to move vesicles and other cargo throughout the cell. For instance, vesicles formed at the trans Golgi face that contain secretory proteins move along these microtubule tracks to the plasma membrane for exocytosis.