Multiple Choice
Which of the following best describes the structure of a DNA molecule?
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7. DNA and Chromosome Structure
DNA Structure
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In nucleic acids, what molecules form the backbone of DNA and RNA?
A
Alternating nitrogenous bases and phosphate groups linked by hydrogen bonds
B
A continuous chain of amino acids linked by peptide bonds
C
Alternating fatty acids and glycerol linked by ester bonds
D
Alternating sugar and phosphate groups linked by phosphodiester bonds
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