The organelle responsible for packaging and distributing proteins in a cell is the Golgi apparatus. This structure modifies, sorts, and packages proteins and lipids synthesized in the endoplasmic reticulum for transport to their final destinations, either within the cell or for secretion outside the cell. The Golgi apparatus consists of a series of flattened membrane-bound sacs, and its functions are crucial for maintaining cellular function and communication. Proper functioning of the Golgi apparatus is essential for producing and distributing bio-molecules necessary for various cellular processes.