A nucleotide is made up of which of the following subunits?
A) a 5- carbon sugar and a nitrogenous base
B) a 5- carbon sugar, an amino group, and an "R- group"
C) a 5- carbon sugar and a phosphate group
D) a 5- carbon sugar, a phosphate group, and a nitrogenous base

Question

Quizplus · Accepted Answer

A nucleotide is made up of a 5-carbon sugar (either ribose or deoxyribose), a phosphate group, and a nitrogenous base (adenine, guanine, cytosine, thymine, or uracil). B is incorrect because nucleotides do not contain an amino group or an "R-group." C is incorrect because nucleotides do not contain just a phosphate group and a sugar - they also contain a nitrogenous base. A is almost accurate, but it leaves out the phosphate group.

A Nucleotide Is Made Up of Which of the Following