Multiple Choice
Which one of the following statements about RNA processing in eukaryotes is true?
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15. Gene Expression
Eukaryotic RNA Processing and Splicing
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Which of these statements correctly describes RNA processing in eukaryotic cells?
A
RNA processing involves the addition of a poly-A tail at the 5' end.
B
RNA processing does not involve any modification of the RNA molecule.
C
Introns are removed and exons are joined together during splicing.
D
RNA processing occurs in the cytoplasm of eukaryotic cells.
Verified step by step guidance1
Understand that RNA processing is a crucial step in the maturation of RNA molecules in eukaryotic cells, transforming precursor mRNA (pre-mRNA) into mature mRNA.
Recognize that RNA processing involves several key modifications: addition of a 5' cap, splicing to remove introns, and addition of a poly-A tail at the 3' end.
Identify that splicing is the process where introns (non-coding regions) are removed and exons (coding regions) are joined together to form a continuous coding sequence.
Note that RNA processing occurs in the nucleus of eukaryotic cells, not in the cytoplasm, which is a common misconception.
Clarify that the addition of a poly-A tail occurs at the 3' end of the RNA molecule, not the 5' end, which is another common error in understanding RNA processing.
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