試題詳解

70. How many items of the followings have the activity of proof-reading to reduce the error rate in biosynthesis?
DNA polymerase； RNA polymerase II； amino-acyl tRNA synthetase； Initiation Factor-1； polyketide synthase； Elongation Factor-Tu； Klenow fragment.
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6