A ribosome becomes attached to the start codon at one end of the mRNA molecule., The tRNA molecule with the complementary anticodon sequence moves to the ribosome and pairs up with the codon on the mRNA, A tRNA molecule with a complementary anticodon pairs with the next codon on the mRNA. This tRNA molecule carries another amino acid., The ribosome moves along the mRNA bringining together 2 tRNA molecules at a time., The 2 amino acids on the tRNA are joined by a peptide bond using an enzyme and ATP to provide the energy., The ribosome moves on to the 3rd codon thereby linking the amino acids on the 2nd and 3rd tRNA molecules, The 1st tRNA is released from its amino acid and is free to collect another..

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