Question

match the following dna repair mechanisms with the enzyme(s) involved: question 8 options: nucleotide excision repair light-dependent repair (photoreactivation) base excision repair mismatch repair 1. glycosylase 2. photolyase 3. dna polymerase i

Answer 1

Base excision repair is associated with glycosylase, light-dependent repair (photoreactivation) with photolyase, nucleotide excision repair with DNA polymerase I, and mismatch repair also involves DNA polymerase alongside other enzymes.

Step-by-step explanation:

The DNA repair mechanisms can be matched with their corresponding enzymes as follows:

• Base excision repair involves an enzyme called glycosylase, which detects and removes incorrect bases.
• Light-dependent repair (photoreactivation) is facilitated by the enzyme photolyase, which repairs thymine dimers in the presence of visible light.
• Nucleotide excision repair uses DNA polymerase I to fill in the gap after the incorrect bases have been excised.
• Mismatch repair also involves DNA polymerase, among other enzymes, for the identification and removal of mismatched bases.