What is the primary function of the Golgi apparatus?

• A. To initiate DNA replication
• B. To modify, sort, and package proteins and lipids
• C. To produce ATP
• D. To store nutrients

Answer: (B)

The primary function of the Golgi apparatus is to modify, sort, and package proteins and lipids for secretion or delivery to various destinations within the cell. After proteins and lipids are synthesized in the endoplasmic reticulum, they are transported to the Golgi apparatus, where they undergo further modifications such as glycosylation, phosphorylation, and sulfation.

Once modified, the Golgi sorts and packages these molecules into vesicles that can either be transported to the cell membrane for secretion, sent to lysosomes for degradation, or delivered to other organelles. This process is crucial for ensuring that proteins and lipids reach their appropriate locations within the cell or are properly secreted outside the cell to perform their functions. The Golgi apparatus plays a key role in the cell’s overall processing and management of biomolecules.