A.为获得耐高温的T4溶菌酶需先设计其空间结构,选择合适位点更换氨基酸 |
B.通过此项研究改造后获得的性状不能遗传给后代 |
C.此项研究中可利用基因的定点诱变技术对指导T4溶菌酶蛋白合成的mRNA进行碱基替换 |
D.T4溶菌酶的改造属于蛋白质工程,自然界中的酶都可通过蛋白质工程进行改造 |
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同类型试题
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
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