Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
12th Edition
ISBN: 9780134811390
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 18, Problem 27ESP

RNA helicases are a class of proteins that bind mRNAs and influence their secondary structures and interactions with other proteins. RNA helicases have been implicated in many steps of RNA regulation such as splicing, decay, and translation. Why might these enzymes be so ubiquitously required for RNA regulation?

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List several ways in which eukaryotic messenger RNA differs from prokaryotic mRNA.
Eukaryotic messenger RNA can undergo post synthetic processing after transcription and before translation. One of the processing steps is splicing, where portions of the RNA are removed and the remaining RNA are joined together. Classify the statements regarding mRNA splicing as true or false. True statements Splicing of mRNA does not involve any proteins. Answer Bank Splicing occurs while the mRNA is attached to the spliceosome. In splicing, intron sequences are removed from the mRNA in the form of lariats (loops) and are degraded. One mRNA can sometimes code for more than one protein by splicing at alternative sites. False statements Splicing occurs after the mRNA enters the cytoplasm but before it binds to the ribosome.
Eukaryotic messenger RNA can undergo post synthetic processing after transcription and before translation. One of the processing steps is splicing, where portions of the RNA are removed and the remaining RNA are joined together. Classify the statements regarding mRNA splicing as true or false. True statements False statements In splicing, intron sequences are removed from the mRNA in the form of lariats (loops) and are degraded. Splicing occurs while the mRNA is still in the nucleus. Splicing of mRNA does not involve any proteins. One MRNA can sometimes code for more than one protein by splicing at alternative sites. Splicing occurs while the mRNA is attached to the nucleosome.

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Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)

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