DNA is made up of phosphate groups, nitrogen bases, and what?

1 Answer

A ribose ( Pentose ) sugar ; precisely, " deoxy-ribose "

Explanation:

DNA is made up of phosphate groups, nitrogen bases (adenine, guanine, cytosine, and thymine), and 5-carbon sugars. This 5-carbon sugar is called deoxyribose.

http://internal.champaignschools.org/staffwebsites/isabelgi/Soph_Bio/DNAstructure.htm

Deoxyribose is derived from ribose and differs in that a hydroxyl group has been replaced with hydrogen. An oxygen atom is lost (see image below).

https://www.mun.ca/biology/scarr/iGen3_02-07.html