Here's a breakdown of its role:
* Receiving: The Golgi receives proteins from the endoplasmic reticulum (ER), where they are initially synthesized.
* Sorting and Modification: It sorts and modifies these proteins, adding sugars (glycosylation), lipids, or other modifications. This is crucial for their proper functioning.
* Packaging: The Golgi packages the modified proteins into vesicles, which are tiny membrane-bound sacs.
* Delivery: These vesicles then transport the proteins to their final destinations within the cell, such as the cell membrane, lysosomes, or other organelles.
Think of the Golgi apparatus as a cellular "post office" that sorts, labels, and delivers proteins to their correct addresses within the cell.