The sequence of proteins being made and secreted from the cell are shown in this diagram

1. Protein is made by the RIBOSOME as amino acids (monomers of protein) are correctly sequenced and connected together by dehydration synthesis
2. the ROUGH ENDOPLASMIC RETICULUM fills with the protein
3. a vesicle of ROUGH ENDOPLASMIC RETICULUM heads to the GOLGI APPARATUS so the protein can be refined
4. the refined protein is packaged in a SECRETION VESICLE heads toward the cell membrane where EXOCYTOSIS occurs.