I don't really know... SORRY ;)
Protein synthesis occurs on ribosomes found in the cell.
In the cytoplasm
cytoplasm
The site for protein synthesis is a cell structure. The specific structure in which synthesis occurs is the ribosomes, which is in the cytoplasm.
In prokaryotes, RNA synthesis and protein synthesis takes place in the cytoplasm. In eukaryotes, RNA is produced in the cells nucleus and then moves to the cytoplasm to play a role in the production of protein.
In the cytoplasm.
The ribosomes
The ribosome forms part of the protein synthesis site in the cytoplasm. This is found in the nucleus and aids in manufacturing proteins.
In cells protein is made when the cells mate and then the synthesis takes place. It takes place in the mitochondria.
If your question is "What is the site of the protein synthesis that occurs in the cytoplasm and on the rough ER?" then the answer is as follows: Protein synthesis occurs in both cases at the ribosomes, which are protein and RNA structures that catalyse the steps of protein synthesis. There are ribosomes free in the cytoplasm and attached to the rough ER. The proteins are processed in the cytoplasm or the ER after synthesis, this involves processes such as folding. The finished proteins are found free in the cytoplasm if they are synthesised by cytoplasmic ribosomes. If they are synthesised on the ER they are transported across the ER membrane into the lumen of the ER and stored in vesicles or released into the interstitial space via secretory vesicles.
On the ribosomes in the cytoplasm of the cellRibosomes
No it can not. it makes RNA and send them to cytoplasm for the protein translation. Ribosomes bind to RNA codons and produce the polypeptide chains.