考研习题练习

考研易错题(2017/10/16)
1题:TheDNA designed byEvan's technology differs strikingly from that synthesized by existing technology in that the former is characterized by its
A. desirable shape and length.
B.imitation of a living cell.
C.delicate but destructive power.
D.resistance to epidemics.
【单选题】:      

2题:呼吸衰竭严重缺氧可导致机体内的变化,下列哪项错误
A.可抑制细胞能量代谢的氧化磷酸化作用
B.可产生乳酸和无机磷,引起代谢性酸中毒
C.氢离子进入细胞内引起细胞内酸中毒
D.组织二氧化碳分压增高
E.体内离子转运的钠泵损害,引起细胞内高钾
【单选题】:        

3题: Using extremely different decorating schemes in adjoining rooms may result in ______ and lack of unity in style.
A.conflict
B.confrontation
C.disturbance
D.disharmony
【单选题】:      

4题:多种原因引起的休克都有一个共同点( )
A.血压下降
B.脉压缩小
C.有效循环血量锐减
D.中心静脉压下降
E.脉压升高
【多选题】:        

5题:下列有关原核生物DNA聚合酶Ⅲ的叙述错误的是
A.它是催化复制延长的酶
B.具有3'-5'外切酶活性
C.具有5'-3,聚合酶活性
D.具有5'-3'外切酶活性
E.有模板依赖性
【单选题】:        

 

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