Multiple Choice
Which regions of eukaryotic mRNA are translated into proteins?
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15. Gene Expression
Eukaryotic RNA Processing and Splicing
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Which one of the following statements about RNA processing in eukaryotes is true?
A
RNA processing involves the addition of a poly-A tail at the 5' end of the mRNA.
B
RNA processing occurs in the cytoplasm before translation.
C
RNA processing does not involve any modification of the RNA molecule.
D
RNA splicing removes introns and joins exons to form a mature mRNA.
Verified step by step guidance1
Understand that RNA processing in eukaryotes is a crucial step that occurs after transcription and before translation.
Recognize that RNA processing includes several modifications to the pre-mRNA, such as capping, polyadenylation, and splicing.
Identify that the addition of a poly-A tail occurs at the 3' end of the mRNA, not the 5' end.
Note that RNA processing occurs in the nucleus, not the cytoplasm, and involves modifications to the RNA molecule.
Understand that RNA splicing is a key process where introns (non-coding regions) are removed, and exons (coding regions) are joined together to form a mature mRNA, which is then exported to the cytoplasm for translation.
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