What Accounts for the Uniform Diameter of the DNA Molecule

question 89

Multiple Choice

What accounts for the uniform diameter of the DNA molecule?

• A) The two sides of the molecule are held together by hydrogen bonds.
• B) The alternating sugar and phosphate backbone coils around the outside of the helix.
• C) One side of the molecule has an unconnected 5' phosphate group,and the opposite end has an unconnected 3'hydroxyl group.
• D) The 3' carbon of one deoxyribose and the 5' carbon of another deoxyribose bond together.
• E) A purine always bonds with a pyrimidine.

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