Golgi Apparatus Specific Functions of the Endoplasmic Reticulum
The extensiveness of the endoplasmic
reticulum and the Golgi apparatus in secretory cells has already been emphasized. These structures are
formed primarily of lipid bilayer membranes similar to the cell membrane, and their walls are loaded
with protein enzymes that catalyze the synthesis of many substances required by the cell. Most
synthesis begins in the endoplasmic reticulum. The products formed there are then passed on to the
Golgi apparatus, where they are further processed before being released into the cytoplasm. But first,
let us note the specific products that are synthesized in specific portions of the endoplasmic reticulum
and the Golgi apparatus.