Multiple Choice
Antisense RNA does which of the following?
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15. Gene Expression
Introduction to Types of RNA
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How is the RNA strand different from the DNA strand?
A
RNA is more stable than DNA.
B
RNA is double-stranded while DNA is single-stranded.
C
RNA contains uracil instead of thymine.
D
RNA has deoxyribose sugar while DNA has ribose sugar.
Verified step by step guidance1
Understand the basic structure of nucleic acids: DNA and RNA are both nucleic acids composed of nucleotides, which include a sugar, a phosphate group, and a nitrogenous base.
Identify the sugar component: DNA contains deoxyribose sugar, which lacks one oxygen atom compared to the ribose sugar found in RNA. This difference is crucial for the structural distinction between DNA and RNA.
Examine the nitrogenous bases: DNA contains adenine (A), thymine (T), cytosine (C), and guanine (G). In contrast, RNA contains adenine (A), uracil (U), cytosine (C), and guanine (G). The presence of uracil in RNA instead of thymine is a key difference.
Consider the strand structure: DNA is typically double-stranded, forming a double helix, while RNA is usually single-stranded, allowing it to fold into various shapes necessary for its functions.
Evaluate stability: DNA is generally more stable than RNA due to its double-stranded structure and the presence of deoxyribose sugar, which makes it less susceptible to hydrolysis compared to the ribose sugar in RNA.
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