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DNA is a polar molecule because it has a negatively (-) charged phosphate group attached to the 5' end of the molecule and a negatively charge hydroxl group (OH) attached to t â¦ he 3' prime end of the molecule. Thus, it is a POLAR molecule which allows it to interact in an aqueous environment.NA is a polar molecule because it has a negatively (-) charged phosphate group attached to the 5' end of the molecule and a negatively charge hydroxl group (OH) attached to t â¦ he 3' prime end of the molecule.
Polar molecules sometimes form hydrogen bonds. A polar molecule cannot bond with a non-polar molecule. Because the oxygen side is negatively charged, water is an example of a polar molecule.Bonds help make DNA's double helix structure possible.his charge difference allows the positive end of the molecule to attract to the negative end of another. A hydrogen bond, a special attraction between some polar molecules, is another important characteristic. It is this bond that helps to make deoxyribonucleic acid (DNA)âs double helix possible.