A:前胰岛素原可与双缩脲试剂产生紫色反应
B:由前胰岛素原生成胰岛素的过程有内质网和高尔基体参与
C:前胰岛素原、胰岛素原和胰岛素都能降低血糖
D:前胰岛素原水解时水中的氢用于形成一NH2和一COOH
阅读短文,选择填空。
My grandfather is fifty-five years old. He's a taxi driver. He loves his job very much. It is Sunday. Today is his birthday. My father, my mother and I are in his home. My uncle also comes here. He's a tall man. He's a worker. He comes to see my grandfather every Sunday. My grandfather has a good friend. His name is Jim. He's from England. He's a nice cook. He comes to see him, too. My grandfather is very happy today.
如图是某元素的原子结构示意图和该元素在元素周期表中的单元格,下列说法不正确的是( )
— No, there's ____ (充足) in the fridge.