The Golgi Apparatus

1. The Golgi Apparatus

2. Defining: • Golgi apparatus – a group of flattened stacks of membranes ( Golgi body) • Cisternae – individual stacks of membranes ( Latin “ collecting vessels” • Cisternae vary in number within the golgi apparatus, depending on what kind of cell they are in

3. Functions: • Collection of molecules • Packaging of molecules • Distribution of molecules • The synthesis of cell wall components

4. Parts: • Transport vesicles – transport non synthesized materials from ER ( Endoplasmic reticulum) • Lumen – storage for materials before going to the cis face • Cis face – front, receiving end, located near ER, materials arrive via transport vesicles

5. Parts: • Trans face – back, exit, materials are discharged into secretory vesicles • Secretory vesicles – carry synthesized materials to their correct location • Lysosomes – digestive vesicles, contain high levels of degrading enzymes

6. Collecting, Packaging, & Distribution • Transport vesicles bring materials into the cis face,cisface synthesizes and moves materials into the trans face • Trans face sends synthesized materials into secretory vesicles which then send them into their proper locations

7. Synthesis: Cell wall components • Noncellulose polysaccharides which form part of the cell walls in plants get synthesized • After they are synthesized, they get sent to the plasma membrane, they are added to cellulose • When added to cellulose, it is assembled on the exterior part of the cell wall