Components of a DNA Nucleotide

Nucleotide Components in DNA

• A nucleotide is composed of three main components: a sugar molecule, a phosphate group, and a nitrogenous base.
• The sugar molecule is deoxyribose, a five-carbon sugar that provides the backbone of the DNA molecule.
• The phosphate group is a phosphate ion bonded to the 5-carbon sugar, forming a phosphodiester bond.
• The nitrogenous base is one of four possible bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
• Adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C), forming the rungs of the DNA double helix.

This quiz covers the essential components that make up a nucleotide in DNA, including the sugar molecule, phosphate group, and nitrogenous base. Test your knowledge on the building blocks of DNA!