问题
单项选择题
下列蛋白质通过凝胶层析柱时最先被洗脱的是( )
A．纤维蛋白原(分子量340000)
B．血清清蛋白(分子量68500)
C．肌红蛋白(分子量16900)
D．牛胰岛素(分子量5700)
E．牛β乳球蛋白(分子量35000)
答案
参考答案：A
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下列蛋白质通过凝胶层析柱时最先被洗脱的是( )
A．纤维蛋白原(分子量340000)
B．血清清蛋白(分子量68500)
C．肌红蛋白(分子量16900)
D．牛胰岛素(分子量5700)
E．牛β乳球蛋白(分子量35000)
参考答案：A
| 选择合适的单词补全短文。 | |
the best time to go to Harbin? Of course ____________. It's windy and cold. But you can ____________ there. ____________ is the best season to go to Sanya. It's sunny and hot. You can ____________ in the sea. What about Hangzhou? __________ is the best time to go there. The sky is __________. The leaves are __________. It's beautiful. You can ____________, too. |