举一反三
- E coli DNA polymerase III: A: can initiate replication without a primer. B: is efficient at nick translation. C: is the principal DNA polymerase in chromosomal DNA replication. D: represents over 90% of the DNA polymerase activity in E: requires a free 5'-hydroxyl group as a primer.
- Which of the following are NOT true about DNA polymerase I in E. coli: A: It can repair the gap in the single-strand DNA. B: It can replace DNA polymerase III to add dNTP into DNA chain when DNA template is damaged. C: Using dNTP as substrate. D: It possesses activity of 5’→3’ endonuclease.
- The polymerase which is used in DNA replication is ( ) A: DNA-dependent RNA polymerase B: DNA-dependent DNA polymerase C: RNA-dependent RNA polymerase D: RNA-dependent DNA polymerase E: none of above
- 以下哪类大肠杆菌DNA聚合酶参与了SOS修复过程 A: DNA polymerase Ⅰ B: DNA polymerase Ⅱ C: DNA polymerase Ⅲ D: DNA polymerase Ⅴ
- DNA replication requires: (1) DNA polymerase III, (2) helicase, (3) DNA polymerase I, (4) DNA-directed RNA polymerase, (5) DNA ligase, the correct order of their participation is: A: 2,3,4,1,5 B: 4,2,1,5,3 C: 4,2,1,3,5 D: 2,4,1,3,5
内容
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In<br/>E.coli, the RNA primer at the beginning of each Okazaki fragment is is removed by 。 A: DNA polymerase B: DNA polymerase I C: DNA polymerase II D: DNA polymerase
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DNA<br/>replication requires: (1) DNA polymerase III, (2) helicase, (3) DNA<br/>polymerase I,<br/>(4) DNA-directed RNA polymerase, (5) DNA ligase, the correct order of<br/>their participation is:() A: 4,3,1,2,5 B: 2,3,4,1,5 C: 4,2,1,5,3 D: 4,2,1,3,5 E: 2,4,1,3,5
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Both DNA polymerase and RNA polymerase are needed in DNA replication process.()
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The most widely used polymerase in the PCR process is ( ). A: klenow fragment B: T4DNA polymerase C: Taq DNA polymerase D: Vent DNA polymerase
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Using the DNA template in a process called _______ RNA is synthesized utilizing which enzyme? A: translation, RNA polymerase B: transcription, DNA polymerase C: transcription, RNA polymerase D: replication, DNA polymerase