Multiple Choice
Which of the following are two key differences between DNA and RNA?
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15. Gene Expression
Introduction to Types of RNA
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Which of the following is a difference between DNA and RNA?
A
DNA is single-stranded, while RNA is double-stranded.
B
DNA uses uracil, while RNA uses thymine.
C
DNA is found only in the cytoplasm, while RNA is found only in the nucleus.
D
DNA contains deoxyribose sugar, while RNA contains ribose sugar.
Verified step by step guidance1
Understand the basic structure of nucleic acids: DNA and RNA are both nucleic acids, but they differ in their sugar components. DNA contains deoxyribose sugar, while RNA contains ribose sugar.
Recognize the structural differences: DNA is typically double-stranded, forming a double helix, whereas RNA is usually single-stranded.
Identify the nitrogenous bases: DNA uses thymine (T) as one of its bases, while RNA uses uracil (U) instead of thymine.
Consider the location within the cell: DNA is primarily located in the nucleus, whereas RNA can be found in both the nucleus and the cytoplasm.
Review the correct answer: The key difference highlighted in the problem is the type of sugar present in the backbone of the molecules—deoxyribose in DNA and ribose in RNA.
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