Question

nucleotides are the building blocks of dna and rna. one nucleotide is also used in which high - energy molecule (pictured below)?
adenosine diphosphate
cytosine triphosphate
guanosine diphosphate (gdp)
adenosine triphosphate (atp)

Explanation:

Adenosine tri - phosphate (ATP) is a high - energy molecule. It is composed of an adenine nucleotide (adenine + ribose + phosphate) with three phosphate groups. The structure in the picture shows a nucleotide with three phosphate groups attached, which is characteristic of ATP. Adenosine diphosphate (ADP) has two phosphate groups, cytosine triphosphate has cytosine as the nitrogenous base instead of adenine, and guanosine diphosphate (GDP) has guanine as the nitrogenous base and two phosphate groups.

Answer:

D. adenosine triphosphate (ATP)