The endoplasmic reticulum, Golgi apparatus, and lysosomes are thus distinguished from other cytoplasmic organelles by their common involvement in protein processing and connection by vesicular transport.
<em>endoplasmic reticulum (ER)</em> (DEFINITION) Organelle in eukaryotic cells that helps make and transport proteins; site of lipid synthesis.
<em>Golgi apparatus</em> (DEFINITION) Organelle in eukaryotic cells that processes proteins and prepares them for use both inside and outside the cell.
The organelles involved in producing and transporting proteins: -Nucleus: DNA to MRNA -Ribosome: mRNA translated into a polypeptide -Endoplasmic Reticulum: polypeptide processing -Transport Vessicle: Take pro-protein from ER to golgi -Golgi Apparatus- sorting and packaging protein into vessicles -Transport Vessicle: Takes protein to cell membrane or lysosome (to be broken down)