4. What is the role of the ribosome in polypeptide elongation during protein translation? (A) Remove the noncoding intron (B) Break hydrogen bonds between the tRNA and the mRNA (C) Travel back and forth between the nucleus and the growing polypeptide, with information on which amino acids should be added (D) Remove incorrectly added amino acids (E) Move along the mRNA transcript bonding amino acids to each other