Here's a breakdown:

* RNA (Ribonucleic acid) is a molecule essential for various biological processes, including protein synthesis.

* Nucleotides are the building blocks of RNA. Each nucleotide consists of three parts:

* A sugar molecule: In RNA, this is ribose.

* A phosphate group: This provides the backbone structure.

* A nitrogenous base: There are four types of nitrogenous bases in RNA: adenine (A), guanine (G), cytosine (C), and uracil (U).

So, RNA is essentially a long chain of nucleotides linked together. The sequence of these nucleotides determines the genetic information encoded in RNA.