What Type of Chemical Bond Connects the Complementary Strands of a DNA

Question

What type of chemical bond connects the complementary strands of a DNA molecule to each other?
A) hydrogen bonds
B) ionic bonds
C) nonpolar covalent bonds
D) polar covalent bonds

Accepted Answer

Hydrogen bonds connect the complementary strands of a DNA molecule to each other. These bonds form between the nitrogenous bases of the two strands, specifically between adenine (A) and thymine (T), and between guanine (G) and cytosine (C). The hydrogen bonds are relatively weak, allowing for the strands to separate during DNA replication and transcription.