上游充通大 SHANGHAI JIAO TONG UNIVERSITY 1896 1920 1987 2006 Virus:Growth,quantification,replication and diversity Lecture 9-1 Essentials of Virology CHAPTER 9 in BROCK BIOLOGY OF MICROORGANISMS Chen FengoNG School of Life Science and Biotechnology. Shanghai Jiao Tong University Email:cf2001@sjtu.edu.cn http://micro.sjtu.edu.cn
1896 1920 1987 2006 Lecture 9-1 Essentials of Virology Virus: Growth, quantification, replication and diversity Chen Feng School of Life Science and Biotechnology, Shanghai Jiao Tong University Email: cf2001@sjtu.edu.cn http://micro.sjtu.edu.cn CHAPTER 9 in BROCK BIOLOGY OF MICROORGANISMS
上浒充通大淫 SHANGHAI JIAO TONG UNIVERSITY What is a virus? One type of genetic elements Nucleic acid Replication independent of a cell's chromosome复制独立于细胞的染色体 Multiplication dependent on host cell's metabolism繁殖依赖于细胞的代谢 ·Have Extracellular state-virus particles有胞外 形式（病毒粒子） Chen Feng,Shanghai Jiao Tong University
Chen Feng, Shanghai Jiao Tong University What is a virus? One type of genetic elements • Nucleic acid Replication independent of a cell’s chromosome复制独立于细胞的染色体 • Multiplication dependent on host cell’s metabolism繁殖依赖于细胞的代谢 • Have Extracellular state-virus particles有胞外 形式(病毒粒子)
上游充通大学 SHANGHAI JIAO TONG UNIVERSITY Differences between virus and plasmid? Virus has extracellular state,plasmid does not Virus can cause cell lysis,plasmid does not Chen Feng,Shanghai Jiao Tong University
Chen Feng, Shanghai Jiao Tong University Differences between virus and plasmid? Virus has extracellular state, plasmid does not Virus can cause cell lysis, plasmid does not …………………
上游充通大 SHANGHAI JIAO TONG UNIVERSITY I.VIRUS AND VIRON 9.1 General Properties of Viruses 9.2 Nature of the virion Chen Feng,Shanghai Jiao Tong University
Chen Feng, Shanghai Jiao Tong University I. VIRUS AND VIRION 9.1 General Properties of Viruses 9.2 Nature of the virion
上浒充通大淫 SHANGHAI JIAO TONG UNIVERSITY 9.1 General properties of viruses Extracellular state胞外形式 Is a minute particle containing nucleic acid surrounded by protein(and occasionally,containing other macromolecular components) ·Virus particle/virion:metabolically inert毒粒：代谢隋性 ©Intracellular state胞内形式 Virus Replication occurs:New copies of virus genome are produced,and the virus coat components are synthesized. Infection the process when a virus genome is introduced into a host cell and reproduces感染 Chen Feng,Shanghai Jiao Tong University
Chen Feng, Shanghai Jiao Tong University 9.1 General properties of viruses Extracellular state胞外形式 • Is a minute particle containing nucleic acid surrounded by protein (and occasionally, containing other macromolecular components) • Virus particle/virion: metabolically inert毒粒:代谢隋性 Intracellular state胞内形式 • Virus Replication occurs: New copies of virus genome are produced, and the virus coat components are synthesized. • Infection : the process when a virus genome is introduced into a host cell and reproduces感染