Which cytoplasmic organelles are the sites of protein synthesis?
Hi your first answerer is correct the ribosomes are the site of protein synthesis. The ribosomes translate the RNA sequence into amino acids synthesising the protein. Ribosomes are found free in the cytoplasm and on the endoplasmic reticulum. The golgi apparatus mentioned by the other answerer is one of the organelles invovled in sorting and transporting the synthesised protein to the correct area of the cell. If you look up ribosomes, tRNA and translation all of these should give you more information on protein synthesis if you need it.
Your question is not very well formulated. -All organelles are in the cytoplasm so there is no such thing as a cytoplasmic organelle. -Protein synthesis occurs with the help of ribosomes. Ribosomes are not organelles, they are huge protein-RNA complexes. In Eukaryotic organisms protein synthesis occurs: a) in the cytosol by free ribosomes (no organelle involved) b) in the ER (ribosomes from the cytosol translate the mRNA and the peptide is simultaneously inserted in the ER) c) in organelles with their own DNA and machinery like mitochondria and chloroplasts.
