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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.
What is polarity and how does water use it? Polarity is when one end of a molecule is slightly positive, and the other end is slightly negative due to unequal sharing of electrons. In a molecule of water, the electrons â¦ from the hydrogen ions travel around the oxygen atom because it is bigger, and so spend less time with the hydrogen atoms making that end slightly positive, and the other end slightly negative.