Chapter 11, Problem 11.36EP

Interpretation Introduction

Interpretation: The type of nucleotide subunit that binds to the $5\text{'}$ end of the polynucleotide chain during the lengthening of the polynucleotide has to be indicated.

Concept introduction: Nucleic acid structure is the sequence in which nucleotides are linked together.  A nucleotide chain is directional as $\text{5'}$ end of the nucleotide carries phosphate and $\text{3'}$ end has a free hydroxyl group, which are joined together by phosphodiester bonds.