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What are the structural differences between RNA and DNA?
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4. Biomolecules
Nucleic Acids
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How do the structures of RNA and DNA differ?
A
RNA is double-stranded, while DNA is single-stranded.
B
RNA and DNA both contain the same nitrogenous bases.
C
RNA has a deoxyribose sugar, whereas DNA has a ribose sugar.
D
RNA contains uracil instead of thymine, which is found in DNA.
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Begin by understanding the basic structures of RNA and DNA. DNA is typically double-stranded, forming a double helix, while RNA is usually single-stranded.
Identify the sugar components in each molecule. DNA contains deoxyribose sugar, whereas RNA contains ribose sugar. The presence or absence of an oxygen atom differentiates these sugars.
Examine the nitrogenous bases present in both molecules. DNA includes adenine (A), thymine (T), cytosine (C), and guanine (G). RNA includes adenine (A), uracil (U), cytosine (C), and guanine (G).
Note the key difference in nitrogenous bases: RNA contains uracil instead of thymine, which is found in DNA. This substitution is crucial for RNA's function and structure.
Summarize the differences: DNA is double-stranded with deoxyribose sugar and thymine, while RNA is single-stranded with ribose sugar and uracil.
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