Multiple Choice
Which of the following is NOT a type of RNA involved in protein synthesis?
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15. Gene Expression
Introduction to Types of RNA
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Which of the following is a major difference between DNA and RNA?
A
DNA is single-stranded while RNA is double-stranded.
B
RNA has a deoxyribose sugar while DNA has a ribose sugar.
C
DNA is found only in the cytoplasm while RNA is found only in the nucleus.
D
RNA contains uracil instead of thymine.
Verified step by step guidance1
Identify the structural components of DNA and RNA. DNA is typically double-stranded, forming a double helix, while RNA is usually single-stranded.
Examine the sugar components in the nucleotides of DNA and RNA. DNA contains deoxyribose sugar, whereas RNA contains ribose sugar.
Consider the location of DNA and RNA within a cell. DNA is primarily located in the nucleus, while RNA can be found in both the nucleus and the cytoplasm.
Focus on the nitrogenous bases present in DNA and RNA. DNA contains adenine, thymine, cytosine, and guanine, while RNA contains adenine, uracil, cytosine, and guanine.
Conclude that the major difference highlighted in the options is that RNA contains uracil instead of thymine, which is a key distinguishing feature between the two nucleic acids.
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