Here's a breakdown:

* Ribosomes are small, complex structures made of ribosomal RNA (rRNA) and proteins. They are found in both prokaryotic and eukaryotic cells.

* mRNA (messenger RNA) carries the genetic code from DNA in the nucleus to the ribosomes.

* tRNA (transfer RNA) brings the appropriate amino acids to the ribosome, matching them to the codons on the mRNA.

* Protein synthesis happens in two main steps:

* Transcription: DNA is transcribed into mRNA.

* Translation: mRNA is translated into a protein by the ribosome, using tRNA to bring the correct amino acids.

So, the ribosomes are like the "protein factories" of the cell, where the instructions from DNA are translated into functional proteins.