题目内容

Which of the following repair cannot fundamentally eliminate DNA structural damage:()

A. nucleotide excision repair
B. mismatch repair
C. photoreactivation repair
D. recombination repair

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Nucleotide excision repair system is similar with mismatch system in replication process, both of which recognize the twisty DNA double helix as damaged site. So the same protein complex can be used to find damaged sites in these two system.()

The depurination sites of DNA strand can be repaired by directly addition of bases to pentose by specific glycosylase based on complementary base pairing.()

The prokaryotic cell is susceptible to environment and DNA damage can be easily generated, therefore its damage-removing synthase is actively expressed as a result of transcriptional activation of RecA.()

多选题 Which of the following damages can be repaired by nucleotide excision repair system:()

A. The broken of DNA double strands
Base insertion
C. Alkylation of bases
D. The formation of thymine dimer

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