Here's a breakdown:

* Nucleic acids are large biomolecules responsible for storing and transmitting genetic information. There are two main types: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).

* Nucleotides are the building blocks of nucleic acids. They consist of three parts:

* A sugar: This is either deoxyribose (in DNA) or ribose (in RNA).

* A phosphate group: This is a negatively charged group that gives nucleic acids their acidic properties.

* A nitrogenous base: These are organic molecules containing nitrogen and are responsible for the genetic code. There are five main types: adenine (A), guanine (G), cytosine (C), thymine (T) - only found in DNA - and uracil (U) - only found in RNA.

Nucleotides are linked together to form long chains called polynucleotides. The sequence of nucleotides in a polynucleotide determines the genetic information encoded in the nucleic acid.