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Multiple Choice
Which of the following does not occur during the processing of eukaryotic mRNA?
A
Translation into protein
B
Addition of a poly-A tail
C
Splicing of introns
D
Addition of a 5' cap
Verified step by step guidance
1
Understand that eukaryotic mRNA processing involves several modifications before the mRNA can be translated into a protein.
Identify the key processes involved in mRNA processing: addition of a 5' cap, splicing of introns, and addition of a poly-A tail.
Recognize that translation into protein is a separate process that occurs after mRNA processing and involves the ribosome reading the mRNA to synthesize a protein.
Review the role of each mRNA processing step: the 5' cap protects the mRNA from degradation, splicing removes non-coding introns, and the poly-A tail aids in stability and export from the nucleus.
Conclude that translation into protein is not part of the mRNA processing steps, as it occurs after the mRNA has been fully processed and exported to the cytoplasm.