Multiple Choice
DNA and RNA are both:
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7. DNA and Chromosome Structure
DNA Structure
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In the DNA double helix, what components form the “rungs” of the molecular ladder?
A
Alternating deoxyribose sugars and phosphate groups linked by phosphodiester bonds
B
Paired phosphate groups held together by ionic bonds
C
Stacks of amino acids connected by peptide bonds
D
Paired nitrogenous bases (A with T, and G with C) held together by hydrogen bonds
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