题目

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Question14 Match each element of E. coli DNA replication with its function. Partial marks will be awarded for each correct response. DNA Polymerase I [select: , Prevents ssDNA secondary structures, Helps prevent DNA supercoiling, Removes RNA primer and replaces with DNA, Synthesises leading and lagging DNA strands] DNA Polymerase II [select: , Synthesises leading and lagging DNA strands, Prevents ssDNA secondary structures, Helps prevent DNA supercoiling, Removes RNA primer and replaces with DNA] DNA gyrase [select: , Helps prevent DNA supercoiling, Prevents ssDNA secondary structures, Removes RNA primer and replaces with DNA, Synthesises leading and lagging DNA strands] Single-stranded DNA binding protein [select: , Removes RNA primer and replaces with DNA, Helps prevent DNA supercoiling, Synthesises leading and lagging DNA strands, Prevents ssDNA secondary structures] ResetMaximum marks: 1 Flag question undefined [select: , Prevents ssDNA secondary structures, Helps prevent DNA supercoiling, Removes RNA primer and replaces with DNA, Synthesises leading and lagging DNA strands]

选项

A.Prevents ssDNA secondary structuresHelps prevent DNA supercoilingRemoves RNA primer and replaces with DNASynthesises leading and lagging DNA strands

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Question14 Match each element of E. coli DNA replication with its function. Partial marks will be awarded for each correct response. DNA Polymerase I [select: , Prevents ssDNA secondary structures, Helps prevent DNA supercoiling, Removes RNA primer and replaces with DNA, Synthesises leading and lagging DNA strands] DNA Polymerase II [select: , Synthesises leading and lagging DNA strands, Prevents ssDNA secondary structures, Helps prevent DNA supercoiling, Removes RNA primer and replaces with DNA] DNA gyrase [select: , Helps prevent DNA supercoiling, Prevents ssDNA secondary structures, Removes RNA primer and replaces with DNA, Synthesises leading and lagging DNA strands] Single-stranded DNA binding protein [select: , Removes RNA primer and replaces with DNA, Helps prevent DNA supercoiling, Synthesises leading and lagging DNA strands, Prevents ssDNA secondary structures] ResetMaximum marks: 1 Flag question undefined\n\n[select: , Prevents ssDNA secondary structures, Helps prevent DNA supercoiling, Removes RNA primer and replace......Login to view full explanation

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Which of the following is needed for DNA synthesis within a bacterial cell but is not needed during PCR in a test tube?

What is the function of DNA polymerase?

Dr. Dre has decided that he wants to cure cancer and so has designed a bunch of compounds to inhibit various enzymes involved in DNA replication. He tests each of the 5 compounds against the enzymatic activity of each of the DNA replication enzymes and records what each one does to work out what they do. He concludes that [ Select ] Compound B Compound E Compound D Compound A Compound C would prevent the replacement of RNA sequences with DNA, while [ Select ] Compound B Compound C Compound D Compound A Compound E would prevent all steps in DNA replication. He predicts that [ Select ] Compound E Compound D Compound B Compound C Compound A would leave the replicated DNA strand as a series of separate DNA fragments, but that [ Select ] Compound A Compound B Compound D Compound E Compound C would lead to the death of the cell upon DNA replication. Finally, he concludes that [ Select ] Compound D Compound C Compound A Compound E Compound B would prevent the formation of both the leading and lagging strands.

Dr. Dre has decided that he wants to cure cancer and so has designed a bunch of compounds to inhibit various enzymes involved in DNA replication. He tests each of the 5 compounds against the enzymatic activity of each of the DNA replication enzymes and records what each one does to work out what they do. He concludes that [ Select ] Compound A Compound D Compound E Compound B Compound C would prevent the replacement of RNA sequences with DNA, while [ Select ] Compound C Compound B Compound E Compound A Compound D would prevent all steps in DNA replication. He predicts that [ Select ] Compound A Compound E Compound B Compound C Compound D would leave the replicated DNA strand as a series of separate DNA fragments, but that [ Select ] Compound C Compound D Compound B Compound E Compound A would lead to the death of the cell upon DNA replication. Finally, he concludes that [ Select ] Compound B Compound C Compound A Compound E Compound D would prevent the formation of both the leading and lagging strands.

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