The backbone of a nucleic acid strand is composed of
A) glycerol.
B) R groups.
C) nitrogenous bases.
D) alternating pentose sugars and phosphate groups.
E) alternating adenines and thymines.

Question

Quizplus · Accepted Answer

The backbone of a nucleic acid strand is composed of alternating pentose sugars and phosphate groups. This backbone forms the structural support for the nitrogenous bases in DNA and RNA.

The Backbone of a Nucleic Acid Strand Is Composed of