Here's a bit more detail:

* Ribosomes are the cellular machinery responsible for translating the genetic code from mRNA into a chain of amino acids, which then folds into a functional protein.

* They are found in both prokaryotic and eukaryotic cells.

* In eukaryotic cells, ribosomes can be found free-floating in the cytoplasm or attached to the endoplasmic reticulum (ER).

* Ribosomes bound to the ER are involved in the synthesis of proteins that are destined for secretion outside the cell or for incorporation into membranes.

* Free ribosomes produce proteins that will function within the cytoplasm.