Question

n the diagram to the right, identify the three components of a nucleotide. Label A Label B Label C Reviewing DNA Structure

Answer 1

The right answer is:

A ==> phosphate group

B ==> pentose

C ==> nitrogenous base

A nucleotide is composed of three parts:

* A nucleotide variable depending on the type of nucleotide (purine or pyrimidine) attached to the carbon 1' of the pentose;

* pentose: a sugar with five carbon atoms ;

* a phosphate group (or phosphoric acid), identical for the nucleotides of DNA and RNA, attached to the 5 'carbon atom of the pentose, and to the 3' carbon atom of the nucleotide pentose following).

Answer 2

A=phosphate group
B=five-carbon sugar
C=nitrogenous base