1. RNA Polymerase 2 generates the end of a pre-mRNA transcript when it ceases tr
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1. RNA Polymerase 2 generates the end of a pre-mRNA transcript when it ceases transcription and releases the transcript, a poly-A tail is then quickly added to the free 3' end. a. True b, False occurs between the third position in the codon and the first position in the anticodon. a. Wobble pairing b. Watson-Crick Base pairing c. Both d. None of the Above 3. Which of the following is FALSE of elF1 and elF1A? a. Dissociating proper complexes between 40S subunits and mRNA b. Encouraging formation of stable 48S complex c. They act antagonistically d. None of the above scanning and elF1A scanning by the 40s subunit. 4. elF1 a. Promotes; pauses b. Pauses; promotes c. Promotes; promotes d. None of the above 5. In Morse code, a series of dots and dashes code for letters of the alphabet. How is this analogous to the genetic code? a. There is complementarity in the genetic code (A is complementary to T, and C is complementary to G). b. The bases that make up DNA are associated by hydrogen bonds c. The machinery involved in DNA synthesis is analogous to the telegraph equipment used in sending Morse code d. The bases of DNA code for the more complex amino acid sequence of the various protein found in cells. 6. The lagging strand in DNA synthesis: a. s continuously synthesized b. Is synthesized by a specialized topposomerase c. Is synthesized in the same 5-3' direction as the leading strand d. Is synthesized in the opposite 3'-5' direction different from the leading strand 7. What is a major difference between eukaryotic DNA replication and prokaryotic DNA replication? a. Prokaryotic replication does not require an enzyme b. Prokaryotic chromosomes have a single origin of replication, while eukaryotic chromosomes have multiple origins of replication c. Eukaryotes are bacteria and have no DNA d. Prokaryotes are bacteria and have no DNAExplanation / Answer
1.Ans . True
Termination of transcription catalyzed by RNA Pase 2 is complex and involves the following steps:
When a noncoding sequence arises, a process called cleavage happens with the help of a complex which is associated with the polymerase. This process is later followed by polyadenylation of 31 end of mature m-RNA.
2. Ans A.Wobble base pairing
This is a non-Watson-Crick base pairing. This happens as a result of the degeneracy of code.[ We know 3 codes together called codon, code for an amino acid. ] The third position of a codon is also called a 'wobble' because U's and C's could be read by a G in the anticodon. Similarly, As and Gs could be read by a U or y (pseudouridine) in the anticodon.
3. Ans. C. "They act antagonistically" is false because both eIF1 and eIF1A act together opening the conformation of 40S Ribosome.
4. Ans C. promotes, promotes.
Both eIF1 and eIF1A act together promoting Ribosomal scanning.
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