The backbone of the helix of DNA is held together by
A)hydrogen bonds.
B)covalent bonds.
C)dipole-dipole interactions.
D)ionic bonds.
E)sugar-to-phosphate bonds.

Question

Quizplus · Accepted Answer

The backbone of the DNA helix is held together by sugar-to-phosphate bonds. These bonds form a covalent bond between the 3' carbon of one sugar molecule and the 5' phosphate of the next sugar molecule. This creates a repeating sugar-phosphate backbone that forms the backbone of the DNA helix.

The Backbone of the Helix of DNA Is Held Together