Final answer:
The Golgi apparatus performs various important functions in the cell, but it does not perform ATP synthesis.
Step-by-step explanation:
The Golgi apparatus plays a crucial role in the cell, but one function it does not perform is ATP synthesis. The primary functions of the Golgi apparatus include protein modification, sorting and packaging of proteins, and formation of lysosomes. The Golgi apparatus receives proteins from the rough endoplasmic reticulum (ER), where they are modified, packaged into vesicles, and then distributed to their proper destinations within the cell. It also produces new lysosomes.