1. Deoxyribose sugar: This is a five-carbon sugar molecule.

2. Phosphate group: This is a negatively charged molecule that attaches to the 5' carbon of the sugar.

3. Nitrogenous base: This is a molecule that contains nitrogen and can be one of four types: adenine (A), guanine (G), cytosine (C), or thymine (T).

These three components are linked together to form a single nucleotide.