Along one side of a DNA molecule, the nucleotides are connected by
A) covalent bonds between phosphate groups and sugar molecules.
B) hydrogen bonds between adenine and guanine.
C) covalent bonds between bases and sugar molecules.
D) hydrogen bonds between adjacent sugar molecules.

Question

Quizplus · Accepted Answer

Along one side of a DNA molecule, the nucleotides are connected by covalent bonds between phosphate groups and sugar molecules, forming the backbone of the DNA strand. The nitrogenous bases project from the sugar-phosphate backbone and are joined by hydrogen bonds.

Along One Side of a DNA Molecule, the Nucleotides Are