Chain elongation consists of three steps: (1)positioning the correct aminoacyl-tRNA to the A site,(2)forming the peptide bond and (3)________.
A)dissociation of the 30S and 50S subunits
B)removal of the fMet-tRNAfmet from the complex
C)moving the mRNA along one codon
D)All of the above
E)None of the above

Question

Quizplus · Accepted Answer

The third step in chain elongation is the movement of the mRNA along one codon, allowing the next aminoacyl-tRNA to bind to the A site and continue the process. Dissociation of the 30S and 50S subunits and removal of the fMet-tRNAfmet from the complex occur later in the ribosomal cycle during termination and recycling.

Chain Elongation Consists of Three Steps: (1)positioning the Correct Aminoacyl-TRNA