I was think about buying a 1999-2005 Silver Pf69 Ultra Cameo State Quarters in either Pcgs or Ngc. I was wondering what grading service is the best out of...
There are two different locations where ribosomes can be found in a  cell. These two locations are suspended in the cytosol and attached  to the endoplasmic reticulum.
The function of ribosomes is protein synthesis. They are either found freely in the cytoplasm of the cell or they are found attached to endoplasmic reticulum. All the best. Ribosomes are the site of protein synthesis, where RNA is made in to proteins for the cell.