A.幽门螺杆菌的DNA双链上各存在一个游离的磷酸基团 |
B.幽门螺杆菌中存在RNA-蛋白质复合物,便于RNA复制 |
C.幽门螺杆菌与胃细胞竞争麦角硫因,会对人体健康产生影响 |
D.在EgtUV的加工和运输过程中,内质网和高尔基体之间通过囊泡联系 |
同类型试题
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
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