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【单选题】
在乳糖操纵子表达调控中乳糖生成的半乳糖的作用是( )A．作为阻遏物结合于操纵基因B．抑制阻遏物基A.
在乳糖操纵子表达调控中乳糖生成的半乳糖的作用是( ) A.作为阻遏物结合于操纵基因
B.
抑制阻遏物基因的转录
C.
使阻遏物失去结合DNA的能力
D.
作为辅阻遏物结合阻遏物
E.
增强RNA聚合酶转录活性
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】对于任意一个逻辑表达式 L ,若将其中所有的与(• )换成或( + ),或( + )换成与(• );原变量换为反变量,反变量换为原变量;将 1 换成 0 , 0 换成 1 ;则得到的结果就是原函数的反函数。
A.
正确
B.
错误
【简答题】下列筛选概念表格中,选择标准如何获得?筛选过程如何进行判断?
【判断题】Issuing marketable securities is the primary way business finance their operations.
A.
正确
B.
错误
【简答题】A firm's ( ) is the specific mixture of long-term debt and equity that the firm uses to finance its operations.
【单选题】The mixture of debt and equity used by a firm to finance its operations is called:
A.
working capital management
B.
financial depreciation
C.
capital budgeting
D.
capital structure
【单选题】The mixture of debt and equity used by a firm to finance its operations is called:
A.
working capital management.
B.
financial depreciation.
C.
cost analysis.
D.
capital budgeting.
E.
capital structure.
【简答题】the specific mixture of long-term debt and equity that the firm uses to finance its operations is called ( )
【单选题】The times-covered ratio, which measures the degree to which managers use debt or equity to finance ongoing operations, is a type of _____.
A.
current ratio
B.
liquidity ratio
C.
leverage ratio
D.
activity ratio
【单选题】The mixture of debt and equity used by the firm to finance its operations is called:
A.
working capital management.
B.
capital structure.
C.
agency cost analysis.
D.
capital budgeting.
相关题目：
【判断题】Issuing marketable securities is the primary way business finance their operations.
A.
正确
B.
错误