Which of the following enzymes is used in methyl mismatch repair, nucleotide excision repair, and base excision repair? Choose one:A. PhotolyaseB. UvrAC. MutSD. DNA polymerase I
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Which of the following is an enzyme involved in excision repair? a. Photolyase c. Endonuclease b. DNA polymerase III d. Telomerase
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Cells Repair Damaged DNA
You have been sitting in the sun a lot lately, though you know full well that the UV in sunlight can cause the formation of pyrimidine dimers (covalent links between adjacent pyrimidine residues) in the DNA of your skin cells. Luckily, skin cells have repair mechanisms that will most likely fix the lesions formed by UV light. Which of the following describes enzymes or mechanisms used in such repair processes? ABC excinuclease recognizes the lesion and cuts out the damaged DNA. RNA polymerase III fills in the damaged area. DNA glycosylases remove the affected bases. The MutH protein marks the strand for repair. Which of the following proteins stabilizes single-stranded regions? DnaA protein DnaB protein SSB Tus
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The enzyme that is involved in excision repair would be ? (a) telomerase (b) DNA polymerase III (C) endonuclease (d) photolyase
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