一.是非题(共10分。只需注明“对”或“错”) 1.大多数嗜热菌的G-C含量高于中温菌。 2.大肠杆菌属低等原核生物,所以其遗传物质只是一条松散的环状双链DNA,不存在DNA高级结构

16.1 Introduction 16.2 The retrovirus life cycle involves transposition-like events 16.3 Retroviral genes codes for polyproteins 16.4 Viral DNA is generated by reverse transcription 16.5 Viral DNA integrates into the chromosome 16.6 Retroviruses may transduce cellular sequences 16.7 Yeast Ty elements resemble retroviruses 16.8 Many transposable elements reside in D. melanogaster 16.9 Retroposons fall into two classes 16.10 The Alu family has many widely dispersed members

21.1 Introduction 21.2 Response elements identify genes under common regulation 21.3 There are many types of DNA-binding domains 21.4 A zinc finger motif is a DNA-binding domain 21.5 Steroid receptors are transcription factors 21.6 Steroid receptors have zinc fingers 21.7 Binding to the response element is activated by ligand-binding 21.8 Steroid receptors recognize response elements by a combinatorial code

19.1 Introduction 19.2 The nucleosome is the subunit of all chromatin 19.3 DNA is coiled in arrays of nucleosomes 19.4 Nucleosomes have a common structure 19.5 DNA structure varies on the nucleosomal surface

一、基本概念 二、转录起始:RNA聚合酶、启动子 三、转录的基本过程 四、转录后加工 五、原核生物与真核生物mRNA的特征比较 六、RNA合成与DNA合成异同点

（一）名词解释 1.增色效应(hyperchromic effect)； 2. 分子杂交（molecular hybridization）； 3. 聚合酶链 式反应（PCR）； 4. DNA 的变性与复性（denaturation and renaturation of DNA）； 5. Tm； 6. 内含子与外显子

一、选择题(单选或多选) 1．证明 DNA 是遗传物质的两个关键性实验是:肺炎球菌在老鼠体内的毒性和 T2 噬菌体感染大肠杆菌。这 两个实验中主要的论点证据是:( )

第一节 细小病毒科 病毒无囊膜，球状，直径25nm，基因组为单分子 线状单股DNA。 一、猪细小病毒 1.致病 猪细小病毒病，病猪表现繁殖障碍、呼吸道 症状，严重危害养猪业。易感猪群发病率非常高。 目前只发现一个血清型

• 分子生物学和医学分子生物学研 究的主要内容 • 分子生物学的历史 • 分子生物学在医学上的应用 • Nucleic acids DNA Structures &functions RNA Structures &functions • Proteins • Interaction between biopolymer protein-protein interaction DNA-protein interaction

A重组DNA技术的基本定义 B基因工程的基本定义 C重组DNA技术与基因工程的基本用途 D基因工程的基本形式