The Golgi Apparatus
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
Functions:
 Collection of molecules
 Packaging of molecules
 Distribution of molecules
 The synthesis of cell wall components
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
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
Collecting, Packaging, &
Distribution
 Transport vesicles bring materials into the cis face, cis
face synthesizes and moves materials into the trans
face
 Trans face sends synthesized materials into secretory
vesicles which then send them into their proper
locations
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