Here's why:
* Ribosomes are complex molecular machines found in all living cells. They are responsible for translating the genetic code carried by messenger RNA (mRNA) into a chain of amino acids, which then folds into a functional protein.
* mRNA carries the genetic information from DNA in the nucleus to the ribosome in the cytoplasm.
* tRNA (transfer RNA) molecules bring the appropriate amino acids to the ribosome, where they are linked together in the order specified by the mRNA.
* The ribosome facilitates the formation of peptide bonds between the amino acids, creating the protein chain.
So, while other cellular components play roles in protein synthesis, the ribosome is the central player in assembling the proteins themselves.
