The nitrogenous bases (and the two strands of the DNA double helix)are held together by
A) weak van der Waals forces.
B) covalent bonds.
C) hydrogen bonds.
D) phosphate bonds.
E) All of the above

Question

Quizplus · Accepted Answer

The nitrogenous bases are held together by hydrogen bonds, which are weaker than covalent bonds and phosphate bonds (which hold the backbone of the DNA strand together) but important for maintaining the stability and shape of the DNA double helix structure. Van der Waals forces are also present but they play a minor role in holding the nitrogenous bases together.

The Nitrogenous Bases (And the Two Strands of the DNA