BIOL 308: BIOL-MSTBIO NEW DSGN ACCESS
18th Edition
ISBN: 9781323838877
Author: Campbell
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 17, Problem 17.3CR
What function do the 5' cap and the poly-A tail serve on a eukaryotic mRNA?
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What function do the 5' cap and the poly-A tail serve on a eukaryotic mRNA?
In eukaryotic cells, mRNAs have been found to have a circular arrangement in which proteins hold the poly-A tail near the 5’ cap. How might this increase translation efficiency?
How does the poly(A) tail affect mRNA stability?
Chapter 17 Solutions
BIOL 308: BIOL-MSTBIO NEW DSGN ACCESS
Ch. 17.1 - Prob. 1CCCh. 17.1 - What polypeptide product would you expect from a...Ch. 17.1 - Prob. 3CCCh. 17.2 - MAKE CONNECTIONS In a research artide about...Ch. 17.2 - What enables RNA polymerase to start transcribing...Ch. 17.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 17.3 - There are about 20,000 human protein-coding genes....Ch. 17.3 - How is RNA splicing similar to how you would watch...Ch. 17.3 - Prob. 3CCCh. 17.4 - What two processes ensure that the correct amino...
Ch. 17.4 - Prob. 2CCCh. 17.4 - Prob. 3CCCh. 17.4 - WH AT IF? In eukaryotic cells, mRNAs have been...Ch. 17.5 - What happens when one nucleotide pair is lost from...Ch. 17.5 - MAKE CONNECTIONS Individuals heterozygous for the...Ch. 17.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 17 - Describe the process of gene expression, by which...Ch. 17 - What are the similarities and differences in the...Ch. 17 - What function do the 5' cap and the poly-A tail...Ch. 17 - Prob. 17.4CRCh. 17 - What will be the results of chemically modifying...Ch. 17 - In eukaryotic cells, transcription cannot begin...Ch. 17 - Which of the following is not true of a codon? (A)...Ch. 17 - The anticodon of a particular tRNA molecule is (A)...Ch. 17 - Which of the following is not true of RNA...Ch. 17 - Which component is not directly involved in...Ch. 17 - Using Figure 17.6, identify a 5' 3' sequence of...Ch. 17 - Prob. 7TYUCh. 17 - Would the coupling of the processes shown in...Ch. 17 - Prob. 9TYUCh. 17 - Prob. 10TYUCh. 17 - scientific inquiry Knowing that the genetic code...Ch. 17 - Prob. 12TYUCh. 17 - Prob. 13TYU
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- How does placement of a ribosome at the start codon differ in bacteria and eukaryotes? What role do the 59 cap and 39 poly-A tail play in this process in eukaryotes?arrow_forwardHow does a eukaryotic ribosome select its start codon? Describe the sequences in eukaryotic mRNAs that provide an optimal context for a start codon.arrow_forwardWhat role does the poly(A) tail play in mRNA function?arrow_forward
- What mRNA is most obviously essential in coding proteins, list and describe two classes of non-coding RNAs that are required for translation?arrow_forwardHow does a eukaryotic ribosome select its start codon? Describe the sequences in eukaryotic mRNA that provide an optimal context for a start codon.arrow_forwardHow do eukaryotic cells ensure the start codon of the mRNA is positioned properly during translation initiation?arrow_forward
- What is the 5′ cap? How is the 5′ cap added to eukaryotic pre-mRNA? What is the function of the 5′ cap?arrow_forwardOne of the codons in mRNA that specifies the amino acid phenylalanine is UUC. What is the anticodon on the tRNA that carries phenylalanine?arrow_forwardWhat polypeptide sequences would you expect to result from a synthetic mRNA with the repeating sequence 5’-UUUGGGUUUGGGUUUGGG-3'?arrow_forward
- A eukaryotic cell carrying out transcription and RNA processing is incubated with 32P-labeled ATP. Where will the radioactive isotope appear in mature mRNA if the ATP is labeled at the (a) α position, (b) β position, and (c) γ position?arrow_forwardWhat makes the bacterial and eukaryotic initiator tRNAs different from other RNAs, and how do these differences help them carry out initiation rather than elongation?arrow_forwardWhat are polycistronic mRNAs?arrow_forward
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