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Ch. 17 - Gene Expression: From Gene to Protein

Chapter 17, Problem 4

Which 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.

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Hi everyone here we have a question that says the eukaryotic pre M. RNA undergoes all the following except a splicing to remove introns. This is correct. Be splicing to remove Exxon's. This is incorrect in eukaryotic pre M r N. A. This will Exxon's will be joined, not removed. C addition of five prime cat to the five prime end. This correct de addition of poly a tail to the three prime end. This is correct. So our answer here is be splicing to remove Exxon's. Thank you for watching. Bye.
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In eukaryotic cells, transcription cannot begin until a. the two DNA strands have completely separated and exposed the promoter. b. several transcription factors have bound to the promoter. c. the 5′ caps are removed from the mRNA. d. the DNA introns are removed from the template.

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The anticodon of a particular tRNA molecule is a. complementary to the corresponding mRNA codon. b. complementary to the corresponding triplet in rRNA. c. the part of tRNA that bonds to a specific amino acid. d. catalytic, making the tRNA a ribozyme.

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Which component is not directly involved in translation? a. GTP b. DNA c. tRNA d. ribosomes

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Using Figure 17.6, identify a 5′→3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys. a. 5′-UUUCCCAAA-3′ b. 5′-GAACCCCTT-3′ c. 5′-CTTCGGGAA-3′ d. 5′-AAACCCUUU-3′

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