The Golgi apparatus is a collection of flattened sacs composed of membranes associated with the endoplasmic reticulum. It modifies, packages, and distributes newly synthesized proteins from the ER. Proteins are transported from the ER to the Golgi via transport vesicles, where they are further processed and packaged inside secretory vesicles to be distributed within the cell or excreted from the cell.

1. 5- Golgi apparatus
 A collection of membranes associated with the ER composed of flatten sacs.
 Modifies, packages, and distributes newly synthesized proteins
 The Golgi is functionally associated with the ER---How???
1. Proteins synthesized on the ER are concentrated internally and transport vesicles are budded off
2. Transport vesicles fuse with the Golgi, dump their contents into the Golgi
3. Golgi packages proteins in vesicles so that they may be excreted from the cell,or used within the cell.
4. Secretory vesicles - used for excretion - leave the Golgi and move to plasma membrane where they fuse and
dump their contents outside