Multiple Choice
Which of the following is a major difference between DNA and RNA?
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15. Gene Expression
Introduction to Types of RNA
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Which of the following statements is true concerning ribonucleic acid (RNA)?
A
RNA uses the base thymine instead of uracil.
B
RNA contains the sugar ribose instead of deoxyribose.
C
RNA is typically double-stranded like DNA.
D
RNA is more stable than DNA under alkaline conditions.
Verified step by step guidance1
Understand the basic structure of RNA: RNA is a nucleic acid similar to DNA but with some key differences.
Identify the sugar present in RNA: RNA contains the sugar ribose, whereas DNA contains deoxyribose. This is a fundamental difference between the two molecules.
Examine the nitrogenous bases in RNA: RNA uses uracil instead of thymine, which is found in DNA. This is another critical distinction.
Consider the typical structure of RNA: RNA is usually single-stranded, unlike DNA, which is typically double-stranded.
Evaluate the stability of RNA: RNA is generally less stable than DNA under alkaline conditions due to the presence of the hydroxyl group on the ribose sugar, which makes it more prone to hydrolysis.
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