11:01DNA Transcription Processing | Exons, Introns, Splicing, 5' Cap, and 3' Poly A TailPremedHQ Science Academy931views
Multiple ChoiceWhich of the following processes occurs in eukaryotic gene expression?3106views6rankHas a video solution.
Multiple ChoiceThe regions in DNA & RNA that encode actual gene products are known as:1640views9rank1commentsHas a video solution.
Multiple ChoiceIn eukaryotes, which mechanism operates after transcription, but before translation of mRNA into protein? 460views
Multiple ChoiceTwo different proteins with mostly different structures are translated from two different mRNAs. These mRNAs, however, were transcribed from the same gene. Which mechanism could best account for this? 410views
Multiple ChoiceWhat is a key difference between eukaryotic and prokaryotic gene expression? 4923views9rank
Textbook QuestionSplicing begins: a. as transcription occurs. b. after transcription is complete. c. as translation occurs. d. after translation is complete.482viewsHas a video solution.
Textbook 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.549viewsHas a video solution.
Textbook 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.3925views
Textbook 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.1642viewsHas a video solution.
Textbook QuestionRNases and proteases are enzymes that destroy RNAs and proteins, respectively. Which of the following enzymes, if added to a spliceosome, would be predicted to prevent recognition of pre-mRNA regions critical for splicing? a. an RNase specific for tRNAs b. an RNase specific for snRNAs c. a protease specific for initiation factors d. a protease specific for a release factor625viewsHas a video solution.
Textbook QuestionWould the coupling of the processes shown in Figure 17.24 be found in a eukaryotic cell? Explain why or why not.411viewsHas a video solution.
Textbook QuestionBiologists have investigated how fast pre-mRNA splicing occurs by treating cells with a toxin that blocks the production of new pre-mRNAs, then following the rate of splicing of the pre-mRNAs that were transcribed before adding the toxin. Why is addition of a toxin important in this study?496viewsHas a video solution.
Textbook QuestionBiologists have investigated how fast pre-mRNA splicing occurs by treating cells with a toxin that blocks the production of new pre-mRNAs, then following the rate of splicing of the pre-mRNAs that were transcribed before adding the toxin. Why is addition of a toxin important in this study?302viewsHas a video solution.