Nucleotide Diagram With Bonds. The boxed area at the lower left encloses one nucleotide. Each nucleotide is made up of a sugar a phosphate group and a nitrogenous base.
Nucleotides are chemical compounds that form the basic structure of nucleic acids like rna and dna. Chemical bonds hydrogen bonds between the bases that are across from one another hold the two strands of the double helix together. When nucleotides connect to form dna or rna the phosphate of one nucleotide attaches via a phosphodiester bond to the 3 carbon of the sugar of the next nucleotide forming the sugar phosphate backbone of the nucleic acid.
Dna is made up of two nucleotide strands.
At the upper right four nucleotides form two base pairs. Thymine and adenine connected by double hydrogen bonds and guanine and cytosine connected by triple hydrogen bonds. What do we mean when we talk about the 3 and 5 ends of dna. Surprisingly though there are only a few different nucleotides.
