Question

DNA is made of two chains of nucleotides. Which type of bonds hold the chains together? hydrogen bonds covalent bonds ionic bonds polar covalent bondsDNA is made of two chains of nucleotides. Which type of bonds hold the chains together? hydrogen bonds covalent bonds ionic bonds polar covalent bonds

Answer 1

The DNA helix is held together by weak hydrogen bonds between the base pairs.

Answer 2

The right answr is hydrogen bonds

The hydrogen bond or hydrogen bridge is an intermolecular force involving a hydrogen atom and an electronegative atom such as oxygen, nitrogen and fluorine. The intensity of a hydrogen bond is intermediate between that of a covalent bond and that of van der Waals forces.

The helices of the DNA (both strands) are maintained by hydrogen bonds.