Structure of DNA and RNA Nucleotides

Nucleotides and Polynucleotides

• Nucleotide Components: Consists of a sugar, a phosphate, and a base.

• Polynucleotides: Chains formed by connecting many nucleotides (where the prefix "poly" indicates many).

Ribonucleic Acid (RNA) Structure

• Chain Configuration: RNA exists as a single chain of nucleotides.

Deoxyribonucleic Acid (DNA) Structure

• Composition: DNA is composed of two polynucleotide chains.

• Physical Shape: The two chains are connected and twisted into a spiral shape.

• Common Analogies: Often described as looking like a spiral staircase or a "twisted ladder."