Final answer:
The Golgi apparatus is comprised of five to six cisternae and functions to modify, sort, and package cellular substances.
Step-by-step explanation:
The Golgi apparatus typically consists of five to six flattened membranous discs called cisternae. This large organelle is tasked with several important cellular functions such as modifying, sorting, and packaging substances for secretion or internal use. Found close to the cell nucleus, the Golgi apparatus processes proteins delivered from the rough endoplasmic reticulum (RER) and is also involved in lipid transport. It operates akin to a postal system, packaging and distributing cellular 'items'. Both plant and animal cells contain Golgi apparatus, with plant cells sometimes having hundreds of these organelles to manage the synthesis of cell wall polysaccharides.
The subject of this question is the Golgi apparatus. The Golgi apparatus is a large organelle found close to the nucleus of the cell and is made up of five to eight cup-shaped, membrane-covered discs called cisternae. It modifies, sorts, and packages different substances for secretion or use within the cell.