The sugar group of the deoxyribonucleotide is a ribose. Its carbons are numbered from 1' to 5'. The hydrogen group is found at the 2' carbon of the sugar component. Option D is correct.
Nucleotides
Monomers are composed of a sugar molecule, joined with a phosphate group and a nitrogenated base. The sequence of nucleotides joined by their extremes compose the DNA and RNA.
Sugar group
DNA sugar group is always a pentose that contains deoxyribose, with hydroxyl modifications.
Carbons in the pentose are numbered from 1' to 5'
- The phosphate group attaches to the 5' carbon,
- There is a free -OH in the 3' carbon that forms a 5'–3' phosphodiester linkage with the following nucleotide.
- The nitrogenated base attaches to the 1' carbon.
- An hydrogen is attached to the 2' carbon.
In a deoxyribonucleotide an hydrogen group is found at the 2' carbon of the sugar component. Option D is correct.
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