Here's why:

* DNA stands for Deoxyribonucleic Acid: The "deoxyribo" part of the name refers to the specific sugar molecule present.

* Deoxyribose is a 5-carbon sugar: It's a modified form of ribose, the sugar found in RNA. The "deoxy" prefix means that it has one less oxygen atom than ribose.

* Structure: Deoxyribose forms the backbone of the DNA molecule. Each deoxyribose molecule is attached to a phosphate group and a nitrogenous base.

Let me know if you have any other questions about DNA!