Here's why:

* Ribosomes are the protein factories of the cell. They read the genetic code from messenger RNA (mRNA) and use that information to link amino acids together, forming polypeptide chains.

* These polypeptide chains then fold into functional proteins.

* Ribosomes can be found free-floating in the cytoplasm or attached to the endoplasmic reticulum (ER).

Let me know if you have any more questions!