更严格地说是药学活性可以和化学结构相关联的分子。
More strictly, a molecule whose pharmacological activity can be correlated with its chemical structure.
在脂肪中加入氢分子,这个加氢的过程改变了脂肪的化学结构。
A hydrogen molecule is then added to the fat. This hydrogenation process alters the chemical structure of the fat.
斯坦福大学的“专家系统”计划始于1965年,用于美国国家航空航天局航天器收集物质的化学测量二十年,来推算其有机分子的可能结构。
Stanford University's Dendral project, was started in 1965 and used for two decades to extrapolate possible structures for organic molecules from chemical measurements gathered by NASA spacecraft.
When these nucleotides get polymerized to form a long DNA molecule they all get polymerized in exactly the same way, the chemistry is the same.
当这些核苷酸多聚化,形成一条长链DNA分子时,它们的聚合方式和,化学结构都完全相同
So my goal today is to talk about sort of the basics of the molecules, their chemistry, the function of DNA in cells, sort of basic - the basic side of that.
所以我今天的任务是告诉你们,DNA分子的各种基团,它们的化学结构,细胞内DNA分子的功能
We'll talk about some chemistry today, what DNA molecules are like, why they have the behavior that they do, and you need to understand this in order to understand how you manipulate DNA.
今天我们会谈到一些化学结构,比如DNA分子的形态,它们为什么会以这种形态存在,你必须先掌握这些,才能理解如何操控DNA
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