【判断题】酶催化的高效性是因为其能降低反应的活化能
【单选题】下列选项中创建数组的方式错误的是
A.
var arr = new Array();
C.
var arr = new array();
D.
var arr =[]; arr.length = 3;
【单选题】听力原文:M: I've been reading about a new healthful fast food. It's made from fish. Have you heard anything about it? W: No, I haven' t. But I don't like fish very much anyway. M: Not to worry. Although i...
【判断题】埃及跨亚、欧两洲,其领土大部分位于非洲东北小部分位于亚洲西南角的西
【单选题】听力原文:W: I've been reading about a new healthful snack food. It's made from fish. Have you heard anything about it? M: No, I haven't, but I don't like fish very much any-way. W: Not to worry. Although ...
D.
An artificial food flavoring.
【单选题】下列选项中创建数组的方式错误的是
D.
var arr=[];arr.length=3;
【单选题】下列关于酶的叙述中,正确的是()
A.
酶都是由内分泌腺细胞合成的,具有高效性和专一性
B.
酶的形成都要经过核糖体的合成、内质网和高尔基体的加工
C.
酶催化效率高是因为其降低反应所需活化能的作用显著
D.
人体中酶的活性受温度、pH的影响,并只在人体的内环境中起作用