Here's a breakdown of its role:
* Synthesis: Molecules like proteins and lipids are synthesized in other organelles (like the endoplasmic reticulum).
* Packaging: The Golgi apparatus receives these molecules and sorts, modifies, and packages them into membrane-bound vesicles.
* Transport: These vesicles bud off from the Golgi and move towards the cell membrane.
* Delivery: The vesicles fuse with the cell membrane, releasing their contents outside the cell or to other organelles.
Think of the Golgi apparatus as the cell's "post office" – it receives, sorts, and delivers packages (molecules) to their proper destinations within the cell or outside of it.