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RevQue7-9 - Klug Concepts of Genetics 8/e Chapter 14 MEDIA REVIEW QUESTIONS QUESTIONS 2 Which sequence is found at 3 end of all tRNAs a TATA b

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Klug, Concepts of Genetics 8/e Chapter 14 MEDIA REVIEW QUESTIONS QUESTIONS 2. Which sequence is found at 3' end of all tRNAs? a. TATA b. AGGAGG c.CCA d. AUG 3. The process of tRNA “charging” does  not  involve a. rRNA b. Aminoacyl synthetase c.ATP d. Amino acids 4. A tRNA synthetase recognizes an amino acid and all of its cognate tRNAs. What  is another term for different tRNAs that accept the same amino acid? a. Isoelectric tRNAs b. Degenerate tRNAs c.Homologous tRNAs d. Isoaccepting tRNAs 5.  What does the Shine-Dalgarno sequence in a prokaryotic mRNA bind during  translation initiation? a. The fmet tRNA b. Initiation factors c.An RNA binding protein in the large ribosomal subunit d. The 16S rRNA 6. Which of the following statements is true of each aminoacyl tRNA that enters the  ribosome to participate in protein synthesis? a. The incoming aminoacyl tRNA is guided to the A site by release factors (RFs). b. The incoming aminoacyl tRNA binds to the A site, and the growing polypeptide  chain in transferred to this aminoacyl tRNA in the A site. c.The incoming aminoacyl tRNA is ejected from the A site after the amino acid is  transferred.
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d. The aminoacyl tRNA initially binds to the P site. 7. Which term describes the three condons (UGA, UAA, and UGA) that do not code  for an amino acid and do not have a corresponding tRNA? a. Nonsense condons b. Missense condons c.Degenerate condons d. Anticodons 8. Polyribosomes consist of a. Several ribosomes b. One mRNA c.One mRNA, several tRNAs, and several ribosomes d. One mRNA and several ribosomes 9. Which of the following components binds first to mRNA during the assembly of  the translation complex? a. Initiator tRNA b. The large ribosomal subunit c.GTP d. The small ribosomal subunit 11.  A mutation is induced in  Neurospora  that causes the loss of function of an  enzyme essential to the biosynthesis of the vitamin pyridoxine. On which medium will  such organisms  not  grow? a. Minimal b. Minimal + all vitamins c.Complete d. Minimal + pyridoxine 12. Which level of protein structure do beta-pleated sheets and alpha helices  represent? a. Primary b. Secondary c.Tertiary d. Quaternary
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13. Occasionally, a mutation is discovered that suppresses termination and allows a  chain-terminating condon to be read as an amino acid code without changing the  condon. What would be most likely effect of such a mutation? a. They change the anticondon sequence for an amino acid-carrying tRNA. b.
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This homework help was uploaded on 04/04/2008 for the course BIO 2204 taught by Professor Athwal/haines during the Spring '08 term at Temple.

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RevQue7-9 - Klug Concepts of Genetics 8/e Chapter 14 MEDIA REVIEW QUESTIONS QUESTIONS 2 Which sequence is found at 3 end of all tRNAs a TATA b

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