生物化学练习题——RNA的转录(Biochemistry exercise - the transcription of RNA)

生物化学练习题——RNA的转录（Biochemistry exercise - thetranscription of RNA）Biochemical practice problems - transcription of RNA (single topic selection)1. The description of RNA polymerase is incorrectA. Consists of core enzyme and sigma factorB. The core enzyme consists of alpha 2 beta betaC. The difference between the whole enzyme and the core enzyme lies in the presence of the beta subunitD. total enzymes include sigma factorE. sigma factor is only related to transcription starting2. The process of synthesizing DNA with RNA isA.D NA's full retention replication mechanismThe semi-retained replication mechanism of b. d NAThe half discontinuous replication of c.d. NAThe total discontinuous replication of d.d. NAE. Reverse transcription3. The enzyme that catalyzes the synthesis of the first strand of cDNA is a template of RNAA. reverse transcriptaseB. telomeraseC. terminal transferaseD. RetrovirusE. phage virus4. The misstatement about the reverse transcriptase is falseA. the action is four dNTPB. catalyze the reaction of RNA to hydrolysisC. Synthesis direction 3 '- 5'D. Catalyzed DNA synthesis by RNAE. Can form the intermediate product of DNA - RNA hybridization5. In DNA biosynthesis, DNA polymerization reactions with catalytic RNA guidance, RNA hydrolysis and dna-directed DNA polymerization are the enzymes of the three functionsA. d. NA polymeraseB.R NA polymeraseC. Reverse transcriptaseD.D NA hydrolaseE. ligase6. In eukaryotic cells, RNA polymerase Ⅲ cataly tic is the product of transcriptionA.h nRNAB.t RNAC. RNAD.U 4, U5snRNAE. 5.8 S, 18S, 28SrRNA precursor7. The product of RNA polymerase I catalytic transcription in eukaryotic cells isA.h nRNAB.t RNAC. 5 srrnaD.U 4, U5snRNAE. 5.8 S, 18S, 28SrRNA precursors8. The enzyme needed during transcription isA.D NA directed DNA polymeraseB. nucleaseC.R guide RNA polymerase Ⅱ NAD.d. NA guided RNA polymeraseThe DNA polymerase directed by E.R NA9. The following statement about rRNA is incorrectA. prokaryotic rRNA is catalyzed by RNA polymeraseB. eukaryotic ribosomal RNA transcription by RNA polymerase Ⅲ synthesisAfter transcription of the c.r. RNA, methylation is requiredD. RRNA genes in chromosome DNA are multicopyE.rrna accounts for 80 to 85 percent of the total RNA in the cell10. The following statement of sigma factor is correctA. participate in identifying the special starting points for transcription RNA on DNA templatesB. participate in identifying the termination signals on the DNA templateC. Bidirectional polymerization of catalytic RNA chainsD. Is an organic compound of small moleculesE. Participate in reverse transcription11. The enzyme that catalyzes the transcription of eukaryotic mrnas isA.R NA polymerase IB.M tRNA polymeraseC.R NA polymerase ⅢD.R NA replicase"E.R NA polymerase Ⅱ12. The enzyme that catalyzes the transcription of prokaryotic mrnas isA.R NA replicaseB.R NA polymeraseC.D NA polymeraseD.R NA polymerase ⅡE.R NA polymerase I13. The enzyme that catalyzes eukaryotic tRNA transcription isA.R NA polymerase IB.D NA polymeraseC.R NA polymerase ⅡD.R NA replicaseE. None of the above14. Eukaryotic RNA polymerase Ⅱ within the nucleus is the product of transcriptionA.h nRNAB. mitochondrial RNAsC.U 6snRNA precursor, 5SrRNA precursorsD. 5.8 S, 28SrRNA precursorsE.S cRNAThe subgroup that promotes the formation of diester in RNA polymerase isA. Prokaryotic RNA polymerase subgroup deltaB. The prokaryotic RNA polymerase, alpha-alphaC.The prokaryotic RNA polymerase subunit betaD. Prokaryotic RNA polymerase subunit betaE. Prokaryotic RNA polymerase subgroup sigmaThe subgroup of the RNA polymerase that recognizes template transcription startsA. Prokaryotic RNA polymerase subgroup deltaB. The prokaryotic RNA polymerase, alpha-alphaC. Prokaryotic RNA polymerase subunit betaD. Prokaryotic RNA polymerase subunit betaE. Prokaryotic RNA polymerase subgroup sigma17. Which of the following statements about the role of reverse transcriptase is wrong?A. DNA is synthesized from RNAB. Need a primer with 3 '-ohC. The extension of the catalytic chain, its direction is 3 ',5 'D. The substrate is four dNTPE. Requires Mg2 + or Mn2 +18. The sequence of a base sequence of DNA is 5 'ACTAGTCAG3', and the corresponding base sequence of thepost-transcriptional mRNA isA. 5 '- TGATCAGTC - 3'B. 5 '- UGAUCAGUC - 3'C. 5 '- CUGACUAGU - 3'D. 5 '- CTGACTAGT - 3'E. 5 '- CAGCUGACU - 3'19. There is a piece of DNA that has a sequence of 3 '... ATTCAG...5 ', the transcription goes from left to right, and the order of RNA that is generated should beA. 5 '... GACUUA... 3 'B. 5 '... AUUCAG... 3 'C. 5 '... UAAGUC... 3 'D. 5 '... CTGAAT... 3 'E. 5 '... ATTCAG... 3 '20. Which of the following statements about dna-directed RNA synthesis is wrong?A. RNA polymerase can catalyze the formation of diesters only when DNA is presentThe RNA polymerase needs to be cited in the transcription processThe synthesis of the c.r. NA chain is from 5 'to 3'D. most of the time there is only one strand of DNA as a template for RNAE. synthetic RNA chains are not circular21. The RNA polymerase of prokaryotic DNA is composed of several subunits, and the composition of its core enzymes isA. alpha beta 2 beta 'B. 1 sigma alpha beta 2 beta,C. alpha alpha beta,D. alpha alpha beta,E. alpha beta beta,Which of the following statements about the sigma factor is true?The subgroup of the A.R NA polymerase, which is responsible for identifying the specific starting points of RNA on the DNA templateThe subunit of b.d. NA polymerase can be synthesized in the direction of 5 ', 3 'and 3'C. Ribosomal 50S, catalyzed peptide bond formationD. Ribosomal 30S subunit, combined with mRNAE. Is the bridge between the 50S and 30S subunits that make up the 70S nuclear protein bodyWhich of the following statements about RNA polymerase and DNA polymerase is correct?A. Using nucleotide diphosphate to synthesize polynucleotide chainsThe B.R NA polymerase requires primers and adds the base at theextended polynucleotide chain 5 '- endThe C.D NA polymerase can also add nucleotides to both ends of the chainThe d.d. NA polymerase can only synthesize DNA with RNAThe E.R NA polymerase and DNA polymerase can only add nucleotides at the end of the 3 '-oh end of the polynucleotide chain24. DNA replication and transcription have many similarities and differences. Which of the following descriptions of DNA replication and transcription is wrong?A. Only one strand of DNA is transcribed in the body, and two strands of DNA are duplicatedB. In both processes, the direction of synthesis is 5 'to 3'.C. The product of replication is usually greater than the transcriptional productD. both processes require RNA primersE. d NA polymerase I and RNA polymerase all need Mg2 +25. There are many similarities and differences in DNA replication and transcription processesA. Transcription is A template with only one strand of DNA, andboth strands of DNA can be used as template chainsB. In the replication and transcription, the direction of synthesis is 5 'to 3'.C. The product of replication is usually greater than the transcription productBoth processes require RNA primerE. both processes require polymerase and multiple protein factors26. Mature eukaryotic biomrna5A. how AB. cap structureC. how CD. how GE. how U27. The DNA binding protein of initiation bacterial gene transcription is called:A. enhancerB. the promoterC. repressorD. sigma factorE. rho factor28. The chain that directs the synthesis of RNA is called in the DNA double chainA. coding chainB. meaningful chainC. template strandD. non-coding chainThat's not true29. The following description of tRNA synthesis is incorrectA.R NA polymerase Ⅲ participation tRNA precursor formationThe precursors of B.t RNA were removed by the enzyme action to remove the excess nucleotides at the end of 5 'and 3'The precursors of C.t RNA contain intronsThe end of the d.t. RNA3 is plus acc-ohThe precursor of the e.t. RNA needs to be chemically modified30. The following account of the transcription termination is correctA. terminated by the termination factor RF participationThe termination signal in the b.d.na chain contains GC enrichment area and AA enrichment zone,The end signal contains GC rich and at-rich areasD. The termination signal should be identified by rho factorE. the above description is incorrect31. The following descriptions of mRNA's post-transcriptional processing are incorrectThe precursors of the arrnas are in the hat of the 5 'end plus m7 GPPPNMPThe precursors of b.m. RNA need to be splicingThe precursors of the C.m RNA need to be clustered at the end of the 3 'endThe precursors of D.m RNA require methylation modification E. some mRNA precursors need to be edited32. The structure of the following RNA transcription termination is correctA. terminated by the termination factor RF participationThe termination signal on the b.d.na chain contains a section of GC enrichment area and AA enrichment zoneC. The termination signal contains GC enrichment area and AT enrichment areaD. Termination signals require s-factor assist identificationE. the above description is incorrect33. The transcription process of RNA is divided intoA. Solution chain, triggering, chain extension and terminationB. Initiation, extension and termination of transcriptionC. Initiation of nucleoprotein circulation, extension and termination of peptide chainsShearing and splicing of D.R NA, end adding nucleotide, modification and RNA editingE. None of the above34. The direction of the synthesis of ribonucleotide chains isA. 3 ', 5 'The biggest - NCitigroup - > CD. 5 '- > 3'E. Can be from 3 'to 5' or from 5 'to 3'35. Mature eukaryotic mRNA5 'terminal hasA. get A hatB.m 7 upppnmpC. 7 CPPPNMPD.m 7 apppnmpE.m 7 GPPPNMP36. The 5 'end processing process that needs to be carried out after the transcription of the original nuclear mRNA isAdd A hatB. Add A tailC. Shear and splicingD.R NA editorE. No hats37. Comparative RNA transcription and DNA replicationA. raw materials are dNTPB. It's all in the nucleusC. All synthetic products need to be cut and processedD. The base pairs of the template chains are a-tE. synthesis begins with primers38. Intron meansA. untranscribed sequencesB. coding sequenceC. The sequence of translationD. Sequences that are transcribedE. None of the above39. Exon refers toThe interval in the a.d.na chainB. the coded sequence of translationC. Untranslated sequencesD. untranscribed sequencesE. None of the above40. The following response belongs to RNA editingA. Methylation of the base after transcriptationB.Splicing of the product after transcriptionC. shear after transcriptionD. Insertion, deletion and substitution of nucleotide residues in transcription productsE. None of the above reactionsThe difference between DNA replication and RNA transcriptionA. genetic information is stored in the order of the base sequenceB. The synthesis of new chains is carried out in the principle of base pairingThe C.R NA polymerase lacks correction functionD. The direction of synthesis is 5 'to 3'.E. synthesis systems require enzymes and multiple protein factors42. The processing of tRNA isA. remove some of the peptide chainsB. 3 'end - CCAC. 3 'end plus polyAD. 5 'end glycosylationE. 30 s by RNase Ⅲ catalytic incision43. The processing of mRNA isA. remove part of the peptide chainB. 3 'end - CCAC. 3 'end plus polyAD. 5 'end glycosylationE. 30 s by RNase Ⅲ catalytic incision44. The enzyme that catalyzes the formation of the mRNA3 'end polyA tail isA. restriction enzymesB. The transferase of guanosineC.R NasE. PD.R NasEDE. Polya polymerase45. The coded sequence of expression activity in genes isA. intronsB. exonsC. docistronD. monocistronE.U snRNP46. Non-coding sequences that are transcribed in the geneA. intronsB. exonsC. docistronThe DE.U snRNP47. Which of the following descriptions of the promoter is correct?The AmRNA began to be translated into the DNA sequenceB. Begin the transcription of the DNA sequence of mRNAThe C.R NA polymerase was originally in the DNA sequence of the DNAD. The DNA part of the inhibitory proteinE. regulate the binding of genes48. The function of rho-factor isA. Binds the repressor to the starting areaB. Increase the rate of RNA synthesisC. Release RNA polymerase binding on promoterD. Participate in the termination of transcriptionE. Allows the activation of specific transcripts49. The promoter isThe sequence of the nucleotide sequence that was first translated on the RNAB. The sequence of the nucleotide sequence of the mRNA that is being transcribedThe sequence of nucleotides that the C.R NA polymerase was first associated withD. The sequence of nucleotides that bind to the inhibitory proteinE. The sequence of nucleotides that trigger DNA replication50. Which of the following statements about DNA transcription is correct?A. Because the two strands of DNA are complementary, the mrnas that are generated at the time of the two chains are the sameB. A DNA containing a structural gene is usually transcribed by two mrnasC. Some of the structural genes in eukaryotic cells are discontinuous because the sequence of some genes is not expressed in the corresponding mRNAD. All of the RNA generated from the specific gene transcription can be fully or partially translatedE. A protein can only be determined by two genes, which are distributed on the homologous chromosomes51. Which of the following descriptions of mRNA is false?A. the mRNA of the prokaryotic cells needs to be poly A tail before the translation beginsB. Many mrnas of prokaryotes carry structural information of several polypeptide chainsC. The mRNA of eukaryotic cells has a special "hat" structure at the end of 5D. MRNA produced by eukaryotic cells is often "processed".E. Eukaryotic mRNA is catalyzed by RNA polymerase II52. Which of the following statements about the "hat" in the RNA molecule is correct?A. The tRNA can be processedB. Exists in tRNA3 '- endC. It is composed of poly AD.There are only mRNA in eukaryotic cellsE. Error in correcting mRNA translation of prokaryotic cells53. RNA viruses contain enzymesA. reverse transcriptaseB. telomeraseC. terminal transferaseD.R NA polymeraseE.D NA ligase54. The splicing of RNAA. Only in the eukaryoteB. Only in the prokaryotesC. eukaryotic nuclei can occurD. Only in rRNAE. None of the above55. Enzyme RNA was first discovered in the precursors of which RNA was studiedAhnRNAB.t RNA precursorsC.s. nRNAD.S cRNA"E.r RNA precursors56. The material required for RNA replication isA.N MPB.N DPC.d NTPD.N TPE.d NDP57. MRNA produced by transcriptional transcription of prokaryotes isA. intronsB. monocistronC. docistronD. interval sequenceE. introns58. MRNA produced by eukaryotic biotranscriptional generation isA. intronsB. monocistronC. docistronD. interval sequenceInsert sequence59. MRNA generated by eukaryotic biotranscription belongs toA. intronsB. exonsC. docistronThe DE.U snRNP60. The mRNA produced by prokaryotic biotranscription belongsA. intronsB. exonsC. docistronThe DE.U snRNP61. The replication of certain RNA viruses requires the following enzymesA. ribozymesB.R Nase ⅢC. methyltransferaseD.rna guided RNA polymeraseE. Nucleotide base transferase62. The rRNA precursor of the tetrasmoid is also known as catalytic activityA. ribozymesB.R Nase ⅢC. methyltransferaseD.rna guided RNA polymeraseE. Nucleotide base transferaseThe subgroup that binds rifampin in the RNA polymerase isA. Prokaryotic RNA polymerase subgroup deltaB. The prokaryotic RNA polymerase, alpha-alphaC. Prokaryotic RNA polymerase subunit betaD. Prokaryotic RNA polymerase subunit betaE. Prokaryotic RNA polymerase subgroup sigma64. Which of the following descriptions of eukaryotic cells is wrong?A. composed of four different rRNA molecules and 70 ~ 80 proteinsB.rrna accounts for about 65% of the totalC. The nuclear protein body is subbase, with 18srRNA in small subunits, and 28S, 5.8 S and 5srrnas in dayaD. 5.8 SrRNA comes from an independent transcription systemE. transcription of the 45S precursors produced three rnas65. Which of the following statements is true?A. Transcription is A process of producing two identical strands of DNA in A semi-reserved manner.B. DNA polymerase, which relies on DNA, is a kind of polymerase, responsible for the transcription of DNA.C. the transcripts of the bacteria (mRNA) are polycistron.D. Delta factor directs the modification of hnRNA to mRNA after eukaryotic transcription.E. helicoenzyme determines the initiation and termination of the transcription and USES the method of cutting the template DNA.Reference answer1. C2. E3. A4. C5, C6, B7. E8. D9. B10. A11. E12 at 11:45. Bl3. E14. A15. D16. E17. C18. C19. C20. B21. A22. A23. E24. D25. D26. B27. D28. C29. D30. C31 microcomputer. The C32. C 33. B34. D35. E36. E37. B38. D39. B40. D41. C42. B43. C44. E45. B46. A47. C48. D49. C50. D51.一个52岁。