- Transport vescicles full of proteins from the rer make their way to the Golgi apparatus. They attach to the cis face and release their contents
- into the cis-Golgi-network. The Golgi apparatus then sorts and packages the different proteins, sometimes modifying them by adding carbohydrates or phosphates. Once sorted, the apparatus creates a sacule filled with proteins which then detaches and is released into the cytoplasm and sent off to 1 of 3 places.
Some transport vescicles simply attach to and become part of the cell membrane. This happens in all cells.
Some secretory vesicles make their way to the cell membrane and release their contents to the outside of the cell, "exocytosis". This happens in secretory cells.
Some transport vesicles are actually lysosomes which cary a digestive enzyme called acid hydrolase, the lysosomes break down worn out bits of cells, food particles, carbohydrates, lots of stuff.