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Question
The backbone of DNA is made up of?
The backbone of DNA is made up of?
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Solution
The correct option is D Sugar and phosphate
DNA is polymer of deoxyribonucleotides; each of which is made up of
sugar, nitrogenous base and phosphate moiety. Two successive nucleotides are joined by phosphodiester bond between 3' hydroxyl of one nucleotide and 5' phosphate of next nucleotide. The hydrophilic backbones of
alternating sugar and phosphate groups are present on the outside of the
double helix facing the surrounding water. Correct option is D.
DNA is polymer of deoxyribonucleotides; each of which is made up of sugar, nitrogenous base and phosphate moiety. Two successive nucleotides are joined by phosphodiester bond between 3' hydroxyl of one nucleotide and 5' phosphate of next nucleotide. The hydrophilic backbones of alternating sugar and phosphate groups are present on the outside of the double helix facing the surrounding water. Correct option is D.
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