In elongation, which step is translocation of the ribosome?

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Multiple Choice

In elongation, which step is translocation of the ribosome?

Explanation:
Translocation is the step in elongation where the ribosome moves along the mRNA by one codon, shifting the tRNAs from the A site to the P site and from the P site to the E site. This movement clears the A site for the next aminoacyl-tRNA to enter and keeps the reading frame aligned with the mRNA. The other steps occur in the cycle at different points: decoding the next tRNA at the A site happens before translocation, peptide bond formation between the A-site tRNA and the growing chain in the P site happens prior to translocation, and the deacylated tRNA exits from the E site after translocation.

Translocation is the step in elongation where the ribosome moves along the mRNA by one codon, shifting the tRNAs from the A site to the P site and from the P site to the E site. This movement clears the A site for the next aminoacyl-tRNA to enter and keeps the reading frame aligned with the mRNA. The other steps occur in the cycle at different points: decoding the next tRNA at the A site happens before translocation, peptide bond formation between the A-site tRNA and the growing chain in the P site happens prior to translocation, and the deacylated tRNA exits from the E site after translocation.

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