【单选题】关于蛋白质二级结构α-螺旋的叙述正确的是
B.
多聚Lys和多聚Ile因为空间位阻效应而不能形成α-螺旋
D.
α-螺旋中,每个氨基酸残基的羰基氧与前面第四个氨基酸残基的亚氨基氢形成氢键
【单选题】下列有关蛋白质α-螺旋的叙述,正确的是( )。
【简答题】A.It's a strange thing. B.Someone has come to see me. C.I feel very surprised at the news. D.There was an accident on the road.
【单选题】It's one thing if a scientific experiment goes wrong in a lab, they say, but something else entirely if it winds up on your dinner plate.
【单选题】—I won the high jump yesterday. —_______. [ ]
D.
Congratulations to you
【单选题】关于蛋白质二级结构α-螺旋的叙述正确的是
B.
多聚Lys和多聚Ile因为空间位阻效应而不能形成α-螺旋
D.
α-螺旋中,每个氨基酸残基的羰基氧与前面第四个氨基酸残基的亚氨基氢形成氢键
【简答题】Time to Dance Are you the kind of person who likes to move with music? It's a natural thing to do. Even little children start jumping up and down when they hear music. Scientists say that animals danc...
【简答题】阅读短文,选择最佳选项。 Many British people like to go bird-watching in their free time. That's why there are many English sayings about birds. Read the following to learn about them. He eats like a bird. This d...
【判断题】Keep in mind that love is not a thing; it's a feeling.