NEET · BiologyHard
During the process of translation in prokaryotes, which of the following events occurs immediately after the formation of the peptide bond between the amino acid in the A-site and the polypeptide chain in the P-site?
- A.Binding of the next aminoacyl-tRNA to the A-site
- B.Translocation of the ribosome along the mRNA
- C.Release of the uncharged tRNA from the E-site
- D.Activation of the peptidyl transferase center
Show correct answer & step-by-step solution
Correct answer: B — Translocation of the ribosome along the mRNA
Solution
- Peptide bond formation is catalyzed by the peptidyl transferase activity of the rRNA.
- This results in the peptidyl-tRNA moving to the A-site.
- The ribosome must then move by one codon to shift the peptidyl-tRNA to the P-site.
- This movement is known as translocation.
- Hence the answer is (B).
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