Multiple Choice
In nucleic acids, which nitrogenous base is found only in DNA (and not in RNA)?
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7. DNA and Chromosome Structure
DNA Structure
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Which of the following statements is NOT true of DNA in most cells?
A
DNA strands have directionality with and ends.
B
DNA contains the bases adenine, thymine, guanine, and cytosine.
C
DNA uses uracil (U) instead of thymine (T) as a standard base.
D
DNA is typically double-stranded and forms a helix.
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