蛋白质的四级结构是指()
A.由多个亚基构成的蛋白质
B.由多个结构域构成的蛋白质
C.含有4种二级结构的蛋白质
D.含有二硫键的蛋白质
E.只有1个N端的蛋白质
参考答案:A
用括号内所给单词的适当形式填空。
1. It's interesting _____ (help) my mother do the housework.
2. He made a kite _____ (make) his daughter happy.
3. My dream is _____ (be) a scientist one day.
4. We went to the theatre _____ (watch) a play.
5. There are many ways _____ (save) animals in danger.
我方按CIF条件出口家具,投保了水渍险。运输中船舶淡水管道漏水,浸泡部分家具,保险公司应对此损失负赔偿责任。()