Here's a breakdown:

* Structure: The Golgi apparatus is made up of flattened, stacked sacs called cisternae. These cisternae are surrounded by a membrane and are connected to each other.

* Function: The Golgi apparatus acts like a processing and packaging center for the cell. It receives proteins and lipids (fats) from the endoplasmic reticulum (ER). The Golgi modifies, sorts, and packages these molecules into vesicles (small, membrane-bound sacs) for various destinations within the cell or for secretion outside the cell.

Think of it like a factory that takes raw materials, processes them, and packages them into finished products ready for delivery!