in the accompanying image, a nucleotide is indicated by the letter . double-stranded dna contains definite elements marked from a to d. letter a marks a full turn of dna. letter b marks a chemical compound, which is a structural element of dna. letter c marks two chains of dna and the bonds between them. letter d marks one chain of the dna. in the accompanying image, a nucleotide is indicated by the letter . double-stranded dna contains definite elements marked from a to d. letter a marks a full turn of dna. letter b marks a chemical compound, which is a structural element of dna. letter c marks two chains of dna and the bonds between them. letter d marks one chain of the dna. a c d b

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Answer is B, The letter B in the accompanying graphic stands for a nucleotide, nitrogenous base phosphate. DNA different nitrogenous bases. Nucleotides are needed for the execution of physiological and metabolic activities.

Building blocks of nucleic acids, energy storage, transporters of activated metabolites for biosynthesis, DNA structural moieties of coenzymes, and metabolic regulators are all roles that nucleotides play in the physiology DNA of animals. A nucleotide is a chemical molecule made composed of a nucleoside and a phosphate.

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