When only glucose is available to E. coli in the culture medium: ( )
A: cAMP-CAP is bound to the promoter；
B: cAMP-CAP is not bound to the promoter；
C: The repressor is not bound to the operator；
D: The lac operon is turn on
A: cAMP-CAP is bound to the promoter；
B: cAMP-CAP is not bound to the promoter；
C: The repressor is not bound to the operator；
D: The lac operon is turn on
举一反三
- Operator is bound by A: activator B: repressor C: promoter D: enhancer E: silencer
- In prokaryotic cells, the DNA sequence which can be recognized and bound with RNA polymerase is called ( ) A: enhancer B: promoter C: silencer D: operator E: attenuator
- cAMP在乳糖操纵子中的作用是：（） A: 转变为 CAP， 发挥作用 B: 于 CAP 结合， 形成 cAMP－CAP 复合物发挥作用 C: 使阻遏蛋白变构 D: 作为第二信使发挥作用
- cAMP在乳糖操纵子中的作用是（） A: 转变为CAP,发挥作用 B: 于CAP结合,形成cAMP-CAP复合物发挥作用 C: 使阻遏蛋白变构 D: 作为第二信使发挥作用
- Operon do not include( ): A: promoter B: regulatory sequence C: operator D: structural gene E: trans-acting factor