Here's why:

* Sorting and Modifying: The Golgi apparatus receives proteins and lipids (fats) from the endoplasmic reticulum (ER). It then sorts, modifies, and packages these molecules into vesicles (tiny membrane-bound sacs).

* Packaging for Transport: The Golgi packages these molecules for various destinations within the cell or for secretion outside the cell. Think of it like a post office that sorts and prepares packages for delivery.

Let me know if you have any other questions!