40. A DNA repair mechanism is usually activated when the genomic DNA is damaged in a cell. Which of the following enzymes is NOT likely involved in the repair process?
(A) a polymerase
(B) a topoisomerase
(C) an exonuclease
(D) an endonuclease
(E) all of the above are involved

1. 題目解析這道題目考查的是DNA修...