Chapter 1 Introduction to the cell Learning Objectives 1.About Cell Biology 2.Look briefly at the history of cell theory, 3. Consider the basic properties of cells; 4. Compare some characteristics of two different classes of cells: prokaryotes and eukaryotes; 5. Comprehend a special life: viruses

An introduction of gene function 1, Storing Information 2、 Replication 3、 Mutation

生物学(Biology)是研究生物体的生命现象和 生命活动规律的科学,即:研究自然界所有生物的 起源、演化、生长发育、遗传变异等生命活动的规 律和生命现象的本质,以及各种生物之间、生物与 环境之间的相互联系。生物学又称生命科学(Life Science),它是自然科学的基础学科之一。广义的 生命科学还包括生物技术、生物与环境、生物学与 其他学科交叉的领域

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

Typical Length Scales in Biology IA lO microtubule DNA width width typical animal cell length of DNA in a chromosome

L4: Cooperativity introduction 2 phage model n phage model (Hasty et al.) as example for applying mass action law

Fine tuned model for perfect adaptation spiro et a1.PNAs94,7263-7268(1997) A model of excitation and adaptation in bacterial chemotaxis

Organizational Remarks: ps#2,1b: Correction: Plot k, and for L= 0...2/K L (NOT: Plot ka and for L 0...2KL) Tomorrow's recitation topic: 'PS #2 support

creation of membrane associated minD first order first order autocatalytic inhibited by (linear, oligomerization) membrane minE, MM)

Review L15 Turing-Gierer-Meinhardt models Local excitation, global inhibition