一、糖的一般概念 (一)概念 俗称碳水化合物

一、核酸的水解 (一)核酸的酸水解或碱水解 核酸分子中的磷酸二酯键可在酸或碱性条件下水解切断

多细胞整体水平调节 所有调节机制都是在基因产物——蛋白质的作用 下进行的,也就是说与基因表达的调控有关

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一、DNA是遗传信息的携带分子 (一)细胞内含有恒定量的DNA (二)DNA是细菌的转化因子 (三)病毒是游离的遗传因子

Chapter13核酸的结构 一、核酸的组成 (一)核酸的元素组成 平均含磷量:DNA9.9%;RNA9.4%

2.1 Weak Interactions in Aqueous Systems 47 and titration curves, and consider how aqueous solu 2.2 lonization of Water. Weak Acids, and tions of weak acids or bases and their salts act as buffers Weak Bases 60 against pH changes in biological systems. The water 2.3 Buffering against pH Changes in Biological

Lehninger Principles of Biochemistry Fourth Edition David L. Nelson (U. of Wisconsin-Madison) Michael. Cox(U. of Wisconsin-Madison) 1. The Foundations of Biochemistry 1.1 Cellular Foundations 1.2 Chemical Foundations 1.3 Physical Foundations 1.4 Genetic Foundations 1.5 Evolutionary Foundations

3.1 Amino Acids 75 acids, covalently linked in characteristic linear sequences 3.2 Peptides and Proteins 85 Because each of these amino acids has a side chain with 3.3 Working with Proteins 89 distinctive chemical properties, this group of 20 pre cursor molecules may be regarded as the alphabet in

一、基因变异致病类型 二、内源基因的变异 三、基因结构突变 四、基因表达异常 五、外源基因的入侵