第四章，文化传播对于文化根基构筑的意义。
The fourth chapter, culture and build the foundation for the significance of culture.
摘要：丝氨酸蛋白酶家族活性中心由一组特征性氨基酸残基构成，其中有一个是丝氨酸。
Abstract: Activity center of serine protease family is constituted by a set of characteristic amino acid residues, which has a serine.
在高浓度盐酸胍下酶失活主要是因为酶二聚体迅速解离成单亚基的过程和单亚基构象逐渐变化的缓慢过程。
The inactivation of aminoacylase in guanidine solution was caused by rapid dissociation of dimer into monomer which was then slowly changed into a stable conformation.
因而前寒武纪化石的缺失和寒武纪三叶虫等突发式出现，好象一把双刃剑，对达尔文演化学说的塔基构成了威胁。
Therefore the deficiency of pre-Cambrian fossil and the sudden emergence of Cambrian trilobite are like a double edged sword posing threat for the very foundation of Darwin evolutionism.
其中碳水化合物都是由单糖构成的，蛋白质是由20种氨基酸构成的，核酸是由核糖、脱氧核糖、和5种碱基构成。
Carbohydrates are made of simple sugars, proteins are made up of 20 amino acids, and nucleic acids are compose of oxy - and deoxy - nucleic sugars and 5 base pairs.
其中碳水化合物都是由单糖构成的，蛋白质是由20种氨基酸构成的，核酸是由核糖、脱氧核糖、和5种碱基构成。
Carbohydrates are made of simple sugars, proteins are made up of 20 amino acids, and nucleic acids are compose of oxy - and deoxy - nucleic sugars and 5 base pairs.
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