Nucleotide Structure
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A nucleotide, a nucleic acid's monomer, is built from a nitrogenous base, a five-carbon sugar, and one or more phosphate groups.
Show
One nucleotide's phosphate group links to the sugar of the next nucleotide, building a chain with a repeating sugar-phosphate backbone.
Watch for
The nitrogenous base varies from nucleotide to nucleotide along a chain; the sugar-phosphate backbone linking them stays the same throughout.