問題詳情
19. The biological role of restriction enzymes is to:
(A) aid recombinant DNA research.
(B)degrade foreign DNA that enters a bacterium.
(C) make bacteria resistant to antibiotics.
(D)restrict the damage to DNA by ultraviolet light.
(E)restrict the size of DNA in certain bacteria.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中