题目
Bio 93 Section CDE 2025 Final Exam Practice Part 2
匹配题
Match the terms and phrases (not all options will be used): 1: Removes RNA nucleotides from the primer from 5` end and then replaces then with DNA nucleotides 2: Synthesizes new strand of DNA by adding new nucleotides to an existing 3` end 3: Breaks apart the hydrogen bonds that hold two strands of DNA together 4: Joins sugar phosphate backbones of 2 adjacent DNA molecules 5: Breaks the sugar phosphate backbone of one strand of DNA, swivels around, and then rejoins the backbone together. 6: Does not require a 3’ end to add nucleotides
选项
A.Helicase
B.DNA Polymerase 3
C.Control Elements
D.Topoisomerase
E.DNA ligase
F.RNA Primase
G.Telomeres
H.DNA Polymerase 1
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标准答案
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思路分析
The question asks you to match each statement about DNA replication with the appropriate term from the list of options. I will go through each option in the order given and explain how it relates (or does not relate) to the statements.
Option: DNA ligase
- This enzyme seals the sugar-phosphate backbone by forming a phosphodiester bond between adjacent DNA fragments, effectively joining two DNA strands together. This corresponds to statement 4, which describes joining backbones of two adjacent DNA molecules. Therefore, DNA ligase is the correct match for statement 4.
Option: DNA Polymerase 1
- DNA Polymerase I has a role in removing RNA primers and f......Login to view full explanation登录即可查看完整答案
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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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