(4)12. DNA polymerase l in E.coli has 3 enzymatic activities. These activities are: 5-> 3′ polymerase, 3′-> 5′ exonuclease and 5′->3′ exonuclease. Fill in the following table: Enzyme activityWhat is the catalytic reaction Function in cell (that is, described by this enzyme activity (answer in a sentence, replication, not a chem equation) the process: repair, transcription, etc.) 5′ -> 3′ polymerase 3′ -> 5′ exonuclease