Final answer:
A polypeptide chain grows from the N-terminus to the C-terminus.
Step-by-step explanation:
A sequence of amino acids in a polypeptide grows from the N-terminus to the C-terminus. The N-terminus refers to the end of the polypeptide chain that has a free amino group, while the C-terminus refers to the end that has a free carboxyl group. The amino acids are connected through peptide bonds, and as more amino acids are added, the polypeptide chain continues to grow in the N to C direction.