阿摩線上測驗
15. In CRISPR-Cas9, the Cas9 protein functions as:
(A) A DNA-binding protein
(B) A DNA-cleaving enzyme
(C) A DNA-polymerizing enzyme
(D) An RNA-editing enzyme
(E) A protein-folding catalyst
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統計： A(2), B(0), C(0), D(1), E(0) #3422981
統計： A(2), B(0), C(0), D(1), E(0) #3422981
