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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.
This makes DNA soluble in water. Alcohol on the other hand, is a non-polar molecule, meaning it has little to no charge. This type of chargeless molecule does not interact with and form hydrogen bonds with DNA and therefore cannot dissolve DNA.NA consists of proteins that are polar. Water is polar so it is soluble in water. Alcohol is also non-polar, so insoluble in ethanol...u owe me 10 pts for this one.