Final answer:
Intracellular transport of vesicles is associated with active transport processes, such as endocytosis and exocytosis, which are essential for moving substances into and out of the cell.
Step-by-step explanation:
Intracellular transport of vesicles is crucial for the movement of macromolecules and substances across the cell membrane due to their size and other properties that prevent them from diffusing directly through the lipid bilayer. This process is a type of active transport that requires energy to operate. Vesicles can transport substances into the cell through processes such as endocytosis,
where the cell membrane envelops a substance and brings it into the cell. Conversely, substances can be expelled from the cell via exocytosis, where vesicles fuse with the cell membrane and release their contents outside the cell. This vesicle transport mechanism is essential for maintaining the internal environment of the cell and facilitating the exchange of materials with the extracellular space.