Multiple Choice
In RNA, which nitrogenous base forms complementary base-pairing hydrogen bonds with adenine?
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7. DNA and Chromosome Structure
RNA
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Which statement about DNA and RNA is correct?
A
RNA contains uracil and is usually single-stranded, whereas DNA contains thymine and is usually double-stranded.
B
DNA is typically single-stranded and serves as the direct template for protein synthesis at ribosomes, whereas RNA is double-stranded and stores genetic information long-term.
C
Both DNA and RNA contain thymine as a nitrogenous base.
D
RNA uses deoxyribose sugar and DNA uses ribose sugar.
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