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Multiple Choice
What is one way in which RNA is different from DNA?
A
RNA contains the sugar ribose, while DNA contains the sugar deoxyribose.
B
RNA contains the base thymine, while DNA contains the base uracil.
C
RNA is double-stranded, while DNA is single-stranded.
D
RNA is more stable than DNA under alkaline conditions.
Verified step by step guidance
1
Understand the structural differences between RNA and DNA. RNA contains the sugar ribose, whereas DNA contains the sugar deoxyribose. This difference in sugars affects the overall stability and structure of the nucleic acids.
Examine the nitrogenous bases present in RNA and DNA. RNA contains the base uracil, while DNA contains the base thymine. This substitution is crucial for the function and structure of RNA and DNA.
Consider the strand structure of RNA and DNA. RNA is typically single-stranded, allowing it to fold into various shapes and perform different functions. DNA is usually double-stranded, forming the well-known double helix structure.
Evaluate the stability of RNA and DNA under different conditions. RNA is less stable than DNA under alkaline conditions due to the presence of the 2'-hydroxyl group in ribose, which makes RNA more prone to hydrolysis.
Summarize the functional implications of these differences. RNA's structure allows it to perform various roles in the cell, such as coding, decoding, regulation, and expression of genes, while DNA primarily serves as the long-term storage of genetic information.