What is the role of the Golgi apparatus?

The Golgi apparatus is a crucial organelle within the cell responsible for modifying, packaging, and sorting proteins and lipids that have been synthesized in the endoplasmic reticulum. Once these molecules are processed, the Golgi apparatus organizes them into vesicles that are then transported to their specific locations within the cell or secreted outside of the cell. This role is vital for the proper functioning of the cell, as it ensures that essential proteins reach their destinations, either to be used in cellular processes or to be exported as needed.

The other roles described in the options—producing energy, facilitating cell division, and transporting nutrients—are attributed to different cellular structures. Mitochondria are responsible for energy production, the process of mitosis involves various organelles to facilitate cell division, and the endoplasmic reticulum plays a role in transporting materials within the cell. Therefore, the primary and accurate function of the Golgi apparatus is its involvement in packaging and storing secretions for discharge.