Here's a breakdown:

* Protein synthesis is the process of creating proteins from genetic instructions. This involves two main steps:

* Transcription: DNA is copied into messenger RNA (mRNA).

* Translation: mRNA is used as a template to build a chain of amino acids, which forms a protein.

* Ribosomes are the cellular machinery responsible for translation. They bind to mRNA and move along it, reading the genetic code.

* As they move, ribosomes recruit transfer RNA (tRNA) molecules that carry specific amino acids. The tRNA molecules match the mRNA codons, and the ribosome links the amino acids together to form a polypeptide chain.

* This chain eventually folds into a functional protein.

In summary, ribosomes are essential for protein synthesis, as they are responsible for decoding mRNA and assembling amino acids into proteins.