Which stage of translation moves the ribosome three nucleotides along the mRNA in the 5' to 3' direction?

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Multiple Choice

Which stage of translation moves the ribosome three nucleotides along the mRNA in the 5' to 3' direction?

Explanation:
During translation, elongation handles the addition of amino acids one by one, and the ribosome actually moves along the mRNA by one codon (three nucleotides) in the 5'→3' direction. That specific movement is called translocation. It's driven by GTP-hydrolyzing elongation factors and rearranges the tRNA positions—A site to P site to E site—so the next codon can be read and the next aminoacyl-tRNA can enter the A site. Initiation is about assembling the ribosome at the start codon, and termination happens when a stop codon is reached, so they don’t describe the ribosome’s stepwise movement along the mRNA.

During translation, elongation handles the addition of amino acids one by one, and the ribosome actually moves along the mRNA by one codon (three nucleotides) in the 5'→3' direction. That specific movement is called translocation. It's driven by GTP-hydrolyzing elongation factors and rearranges the tRNA positions—A site to P site to E site—so the next codon can be read and the next aminoacyl-tRNA can enter the A site. Initiation is about assembling the ribosome at the start codon, and termination happens when a stop codon is reached, so they don’t describe the ribosome’s stepwise movement along the mRNA.

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