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Multiple Choice
Which of the following is NOT a difference between RNA and DNA?
A
RNA contains ribose sugar, while DNA contains deoxyribose sugar.
B
RNA is more stable than DNA under alkaline conditions.
C
RNA uses uracil as a base, while DNA uses thymine.
D
RNA is typically single-stranded, whereas DNA is double-stranded.
Verified step by step guidance
1
Identify the structural components of RNA and DNA: RNA contains ribose sugar, while DNA contains deoxyribose sugar. This is a key difference between the two nucleic acids.
Examine the nitrogenous bases used in RNA and DNA: RNA uses uracil as a base, whereas DNA uses thymine. This is another fundamental difference.
Consider the typical structure of RNA and DNA strands: RNA is usually single-stranded, while DNA is double-stranded. This structural difference is well-known.
Evaluate the stability of RNA and DNA under alkaline conditions: DNA is generally more stable than RNA under alkaline conditions due to the presence of the 2'-hydroxyl group in RNA, which makes it more prone to hydrolysis.
Determine which statement is NOT a difference: The statement 'RNA is more stable than DNA under alkaline conditions' is incorrect, as DNA is actually more stable. This is the statement that is NOT a difference between RNA and DNA.