Question

the ribosome, complementary to the codon on the mrna, and peptide bonds form between successive amino acids. the ribosome moves along the mrna, translocating the trnas and exposing new codons. this process continues until a stop codon is encountered in the mrna. which step of translation involves adding amino acids one by one to a polypeptide chain? elongation transcription synthesis

Explanation:

Translation has three main steps: initiation, elongation, and termination. Elongation is the step where amino - acids are added one by one to the growing polypeptide chain as the ribosome moves along the mRNA. Transcription is the process of making mRNA from DNA, not part of translation. Synthesis is a general term and not the specific step in translation for adding amino - acids.

Answer:

A. elongation