In eukaryotes, but not in prokaryotes, ribosomes find the start site of translation by

Question

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In eukaryotes, ribosomes find the start site of translation by scanning along the mRNA from the 5′ end. This is because eukaryotic mRNA typically contains a 5′ untranslated region (UTR) that precedes the initiation codon, which is usually the AUG codon that serves as the start site for translation. The ribosome scans along the mRNA until it reaches the initiation codon, where it then begins translation. In prokaryotes, on the other hand, ribosomes bind directly to a ribosome-binding site preceding the initiation codon, which is typically located just a few nucleotides upstream of the AUG start codon.

In Eukaryotes, but Not in Prokaryotes, Ribosomes Find the Start