21. 在一個含有 X-gal(5-bromo-4-chloro-3-indolyl-β-D-galactopyranoside)的培養基上,若細菌表現下列何
種酵素,將可水解 X-gal 並產生藍色產物?
(A) β-glucuronidase
(B) α-galactosidase
(C) λ-galactosidase
(D) β-galactosidase
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統計: A(30), B(18), C(12), D(488), E(0) #3223431
統計: A(30), B(18), C(12), D(488), E(0) #3223431