Here's how it works:
1. mRNA binds to the ribosome: The mRNA molecule, carrying the genetic code for a protein, attaches to the ribosome.
2. tRNA brings amino acids: Transfer RNA (tRNA) molecules, each carrying a specific amino acid, bind to the mRNA according to the codons (three-nucleotide sequences) present in the mRNA.
3. Peptide bond formation: The ribosome facilitates the formation of peptide bonds between the amino acids brought by the tRNA molecules. This process is called translation.
4. Movement along the mRNA: The ribosome moves along the mRNA molecule, reading the codons and adding amino acids to the growing peptide chain.
5. Protein synthesis: The process continues until a stop codon is reached, signaling the end of the protein. The completed polypeptide chain then detaches from the ribosome.
So, the ribosome is essentially the "factory" where the protein is assembled, moving along the mRNA like a conveyor belt and connecting amino acids together to form the peptide strand.
