Here's why:
* Ribosomes are the sites of protein synthesis. They create proteins based on the instructions from DNA.
* The Golgi apparatus is a stack of flattened membrane-bound sacs called cisternae. It receives proteins from the endoplasmic reticulum (ER), where they are initially synthesized.
* The Golgi apparatus then modifies, sorts, and packages these proteins into vesicles for secretion or transport to other parts of the cell.
Think of the Golgi apparatus like a post office: it receives packages (proteins), processes them (modifies and sorts), and sends them out (secretes) to their destinations.
