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【单选题】

DNA序列中在某位点插入或缺失数个碱基,使得该位点之后的三联密码组合发生改变,此突变类型为

A.
错义突变
B.
同义突变
C.
无义突变
D.
移码突变
题目标签：密码组发生改变三联密码
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【单选题】导致木材物理力学性质发生改变的临界含水率是( )。
A.
最大含水率
B.
平衡含水率
C.
纤维饱和点
D.
最小含水率
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【单选题】当搜索框内的文本发生改变时激发的方法是（）
A.
UIBarStyleDefault
B.
UIBarStyleBlack
C.
searchBar：textDidChange
D.
UIBarStyleBlackTranslucent
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【单选题】木材中( )含量的变化将明显导致木材强度与变形发生改变。
A.
化学吸附水
B.
自由水
C.
游离水
D.
存在于细胞壁内的水
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【单选题】酶原激活时，致使酶分子构象发生改变的原因是
A.
氢键断裂
B.
肽键断裂
C.
疏水键断裂
D.
二硫键断裂
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【简答题】Jerry was the kind of guy who was always in a good mood and always had something positive to say. When someone would ask him how he was doing, he would reply, "If I were any better, I would be twins!"...
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【单选题】凡AUG三联密码都是（）。
A.
蛋白质合成的终止信号
B.
线粒体蛋白质合成启动信号
C.
启动tRNA的反密码
D.
代表蛋氨酸或甲酰蛋氨酸
E.
蛋白质合成的启动信号
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【简答题】Jerry was the kind of guy who was always in a good mood and always had something positive to say. When someone would ask him how he was doing, he would reply, "If I were any better, I would be twins!"...
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【简答题】Jerry was the kind of guy who was always in a good mood and always had something positive to say. When someone would ask him how he was doing, he would reply, "If I were any better, I would be twins!"...
查看完整题目与答案

【判断题】外界条件发生改变，反应体系的平衡状态一定发生改变。
A.
正确
B.
错误
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【多选题】引起关节活动度发生改变的病理因素有以下哪些()
A.
疼痛
B.
保护性痉挛
C.
各种病损
D.
运动过度
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