Final answer:
The Golgi apparatus, or Golgi complex, is made up of fewer than eight cisternae and functions as a cellular post office, sorting and packaging proteins and lipids.
Step-by-step explanation:
The Golgi apparatus, also known as the Golgi complex, is an essential organelle found in eukaryotic cells. It is comprised of a series of flattened disklike membranous cisternae with dilated rims, often arranged in an orderly stack. In each Golgi complex, typically, fewer than eight cisternae are arranged in this way. The Golgi apparatus is involved in modifying, sorting, and packaging substances - particularly proteins and lipids - for secretion out of the cell or for use within the cell. The Golgi apparatus acts much like a post office within the cell, where it packages and labels these biomolecules before sending them to their intended destinations.