Concept 6 Review: Phosphate Groups and Nucleotides
Nucleotides can have one, two, or three phosphate groups. Nucleotides with two or three phosphate groups are good energy donors.
Phosphate groups can be joined together to form phosphodiester bonds. Phosphate groups can also be joined to other molecules, such as sugar.
When phosphate is added to a nucleoside, the molecule is called a nucleotide.