Hydrogen bond

From Conservapedia

A hydrogen bond is an attraction between polar molecules. They are formed when oppositely charged ends of polar molecules are attracted to one another. This weak attractive force is the hydrogen bond.

Hydrogen bonds are responsible for the double-helical structure of DNA, and for the tertiary and quaternary structure of proteins. Hydrogen bonds are relatively weak, especially compared with metallic, ionic or covalent bonds. They are stronger than van der Waals forces.