試卷名稱:106年 - 106 國立清華大學_碩士班考試入學試題_生命科學院甲、醫學生物科技學程:分子生物學#126172
年份:106年
科目:研究所、轉學考(插大)◆分子生物學
2. Which of the following descriptions is correct about an ara operon?
(A) Arabinose can derepress the ara operon by causing AraC to loosen its attachment to araO1 and to bind to aral2 instead.
(B) In the positive control, CAP-CAMP complex-binding site is located within the
promoter.
(C) AraC binds to aral2 and araO2, but not aral, in the looped state.
(D) The two dimers in an ara repressor tetramer interact with the major groove of the DNA
(E) Recent experimental evidence has shown that three ara operator sequences are needed for maximal expression.