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Which of the following best describes the composition of a nucleotide?

Select one:

a.
a pair of six-carbon rings attached to each other

b.
a carbon atom joined to a hydrogen and three functional groups

c.
a chain of carbon atoms with a carboxyl group bonded to one end

d.
a five-carbon sugar attached to a phosphate group and a nitrogenous base


Sagot :

Answer:

d

Explanation:

Nucleotide is composed of 3 main subunits, which are nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates.

D

A nucleotide is composed of sugar, 5 rings, with a phosphate and a nucleotide.