微生物学发展分哪几个时期,主要代表科学家及主要贡献?
参考答案:
推测期观察期列文虎克观察到了微生物生理期巴斯德、科赫疫苗、巴氏杀菌、固体培养基分子生物学期沃森核酸的结构。
在酶免疫方法中最常用的固相载体是()
A.硝酸纤维素膜
B.聚苯乙烯反应板
C.醋酸纤维素膜
D.琼脂板
E.玻璃纤维板
用所给词的适当形式填空。
1. Kangaroos are _____ (play) and chimpanzees are _____ (noise).
2. I was _____ (surprise) to find hardly anyone in the zoo.
3. Visiting zoos are like _____ (live) textbooks for young people.
4. He _____ (use) to be _____ (call) "Little Tiger".
5. Liu Xiang's success is an _____ (inspire) to us all