A deoxyribonucleotide is a
A) deoxyribose plus a nitrogenous base.
B) sugar and a phosphate.
C) nitrogenous base bonded at the 5' end to a sugar-phosphate backbone.
D) ribose plus a nitrogenous base.
E) deoxyribose plus a nitrogenous base and a phosphate group.

Question

Quizplus · Accepted Answer

A deoxyribonucleotide is made up of three components: a deoxyribose sugar, a nitrogenous base, and a phosphate group. Therefore, the best choice is E which includes all three components. A is incorrect because it only includes a sugar and a nitrogenous base, while B only includes a sugar and a phosphate group. C is describing the general structure of a DNA molecule, not a deoxyribonucleotide specifically. D is incorrect because it includes ribose sugar instead of deoxyribose sugar.

A Deoxyribonucleotide Is a