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Multiple Choice
Which of the following statements is false when comparing RNA and DNA?
A
RNA is typically single-stranded, whereas DNA is double-stranded.
B
RNA is generally less stable than DNA due to its 2'-hydroxyl group.
C
RNA contains ribose sugar, while DNA contains deoxyribose sugar.
D
RNA uses the base thymine, while DNA uses the base uracil.
Verified step by step guidance
1
Identify the structural differences between RNA and DNA. RNA is typically single-stranded, while DNA is double-stranded. This is a true statement.
Consider the stability of RNA compared to DNA. RNA is generally less stable due to the presence of the 2'-hydroxyl group on its ribose sugar, which makes it more prone to hydrolysis. This is a true statement.
Examine the sugar components of RNA and DNA. RNA contains ribose sugar, whereas DNA contains deoxyribose sugar, which lacks one oxygen atom at the 2' position. This is a true statement.
Analyze the nitrogenous bases used in RNA and DNA. RNA uses uracil as one of its bases, while DNA uses thymine. This is a true statement.
Identify the false statement by comparing the given options. The statement 'RNA uses the base thymine, while DNA uses the base uracil' is incorrect because it reverses the bases used by RNA and DNA.