Answer:
- Nucleus
- Ribosome
- Endoplasmatic reticulum
- Golgi apparatus
Step-by-step explanation:
In the nucleus, it occurs transcription, which is the synthesis of the messenger RNA, mRNA.
- mRNA goes to the cytoplasm where protein synthesis is initiated. mRNA meets a free ribosome. Ribosomes are composed of two subunits, a small one that has a union site for the mRNA. And a big one that has two recognizing sites for tRNA. During translation, tRNA transfers amino acids to build the polypeptide chain. When the ribosome reaches the end codon, it means that protein synthesis has finished.
- The proteins that are destined for export, or to be part of the plasmatic membrane, might be driven to the Endoplasmatic reticulum where they finish the elongation process and where they suffer a few posterior steps related to conformation and structure, such as their folding to become functional. The newly synthesized proteins get packaged into vesicles that take them to the Golgi apparatus.
- In the Golgi complex, proteins suffer their final association with carbohydrates and lipids to originate glycoproteins and glycolipids. Once these processes are done, the glycoproteins and glycolipids are packaged again into new vesicles that drive them to their final destiny.