The correct option is 2: N-terminal amino acid The synthesis of a polypeptide chain, a process known as translation, begins specifically at the N-terminal (Amino-terminal) end. This fundamental principle is known as N-terminal to C-terminal synthesis. Every amino acid has two key functional groups: an amino group ($\text{--NH}_2$) and a carboxyl group ($\text{--COOH}$). During translation, the first amino acid in the chain, which is almost always Methionine in eukaryotic cells,…Read More