Microbial molecular biology and genetics A clone: a population of cells that are derived asexually from a parental cell and are genetically identical. Genome: all the genes present in cell or virus. Central dogma:dna→rna→ protein transcription translation

试卷(一) 一、单项选择题(10分) (1)GPS卫星星座配置有()颗在轨卫星。 (a)21(b)12(c)18(d)24 (2)SA政策是指() (a)精密定位服务(b)标准定位服务 (c)选择可用性(d)反电子欺骗 (3)UTC表示()。 (a)协议天球坐标系(b)协议地球坐标系 (c)协调世界时(d)国际原子时

通常把生产实践与科学实验中的结果,如产品的性能, 产量等统称为指标,影响指标的因素用A,B,C,…,表示。 因素在试验中所取的不同状态称为水平,因素4的不同水 平用A1,A2表示。 在一项试验中,如果让一个因素的水平变化,其他因素 水平保持不变,这样的试验叫做单因素试验。处理单因 素试验的统计推断问题称为单因素方差分析或一元方差 分析。类似地可定义多因素方差分析。本节先介绍单因 素方差分析

I. Choose the Correct Answer 1. Which statement is most correct? (C) (A)Uniform circular motion causes a constant force toward the center. (B)Uniform circular motion is caused by a constant force toward the center

1.三股正手辫是通过将外侧发束交替到中间发束之而形成的。A A.上 B.下 C.左 D.右 2.三股反手辫是通过将外侧发束交替到中间发束之而形成的。B A.上 B.上 C.左 D.右

1.三股正手辫是通过将外侧发束交替到中间发束之而形成的。A A.上 B.下 C.左 D.右 2.三股反手辫是通过将外侧发束交替到中间发束之而形成的。B A.上 B.上 C.左 D.右

1. Hemoglobin is a multisubunit allosteric protein that carries 02 in erythrocyte. 1.1 Hemoglobin is a well-studied and well-understood protein. 1.1.1 It was one of the first proteins to have its molecular mass accurately determined. 1.1.2 The first protein to be characterized by ultracentrifuge. 1.1.3 The first protein to be associated with a specific physiological function

11.1 Binary Search Trees 1.Definition: A binary search tree is a binary tree that may be empty. nonempty binary search tree satisfies the following properties: 1)Every element has a key and no two elements have the same key: therefore,all keys are distinct

9.1 Introduction A priority queue is a collection of zero or more elements. Each element has a priority or value

AMCM-95问题-A单一螺旋线 问题为向小型微生物工程公司提供帮助。设计出“实时”求一条螺旋线与 空间中位于一般位置的平面(见图95A-1所有交点的方法,证明方法的正确性并 编程对算法进行数值检验