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Home Q & A Board Biology-Related Homework Help Biochemistry
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smonkey89 smonkey89
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11 years ago
What is the composition of the backbone of DNA?
a) alternating sugar and phosphate molecules
b) complementary base pairs
c) alternating sugar and base molecules
d) polysaccharide
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wrote...
#1
11 years ago
I am fairly sure it is complementary base pairs. I could be wrong and you can track me down and beat me later if i am but that would be my answer. (and i am going into biology as a career). Hope that helps
wrote...
#2
11 years ago
a) alternating sugar and phosphate
wrote...
#3
11 years ago
(a)
The primary structure of DNA is the linear sequence of its 2'-deoxyribonucleotide  residues. The nucleotide residues of DNA are linked  by 3'-5' phosphodiester linkage. The esterification reaction between two nucleotides that results in the phosphodiester linkage. Each single strand of DNA is characterized by a backbone of alternating deoxyribose and phosphate groups  in phosphodiester linkage.
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