15. Gene Expression
Eukaryotic RNA Processing and Splicing
15. Gene Expression
Eukaryotic RNA Processing and Splicing
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- Multiple Choice
Which of the following processes occurs in eukaryotic gene expression?
- Multiple Choice
A mRNA poly-A tail:
- Multiple Choice
The regions in DNA & RNA that encode actual gene products are known as:
- Multiple ChoiceIn eukaryotes, which mechanism operates after transcription, but before translation of mRNA into protein?
- Open QuestionSplicing begins:a. as transcription occurs.b. after transcription is complete.c. as translation occurs.d. after translation is complete.
- Open QuestionCompared with mRNAs that have a cap and tail, predict what will be observed if a eukaryotic mRNA lacked a cap and poly(A) tail.a. The primary transcript would not be processed properly.b. Translation would occur inefficiently.c. Enzymes on the ribosome would add a cap and poly(A) tail.d. tRNAs would become more resistant to degradation.
- Open QuestionWhich of the following is true of RNA processing? (A) Exons are cut out before mRNA leaves the nucleus. (B) Nucleotides are added at both ends of the RNA. (C) Ribozymes may function in the addition of a 5′ cap. (D) RNA splicing adds a poly-A tail to the mRNA.
- Open QuestionWhich of the following is not true of RNA processing?a. Exons are cut out before mRNA leaves the nucleus.b. Nucleotides may be added at both ends of the RNA.c. Ribozymes may function in RNA splicing.d. RNA splicing can be catalyzed by spliceosomes.