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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.
Best Answer: DNA is made up of nucleotides. Each nucleotide has a T (thymine), G (guanine), C (cytosine), or A (adenine) on it. This determines the sequence of the DNA. These nucleotides are hooked up side by side to form a chain. This one chain hooks up to a complementary chain on top. It is complementary because each of the T,G,C, and As hook up with their partners. T-A and G-C. Now in addition to the complementary nature of DNA it is also anti-parallel. The thing is, is that DNA has directionality.