上充通大学 Shanghai Jiao Tong University Lecture 3-2 Microbial cell biology Chapter 3 in 8 BROCK BIOLOGY OF MICROORGANISMS AO TONG Zhao Liping,Chen Feng College of Life Science and Biotechnology, Shanghai Jiao Tong University http://micro.sjtu.edu.cn
Lecture 3-2 Microbial cell biology Chapter 3 in BROCK BIOLOGY OF MICROORGANISMS Zhao Liping, Chen Feng College of Life Science and Biotechnology, Shanghai Jiao Tong University http://micro.sjtu.edu.cn
上泽充通大￥ Shanghai Jiao Tong University 3.4 Cell Morphology and the Significance of Being Small Major Bacterial Cell Morphologies ·Coccus(plural,.cocci)球菌 ·Rod杆菌 ·Spirillum(plural,,spirilla)螺菌 ·Spirochetes.螺旋体 ·Appendaged bacteria带附器的细菌 ·Filamentous bacteria丝状细菌 Shanghal Jlao Tona Universtty
Shanghai Jiao Tong University Major Bacterial Cell Morphologies • Coccus (plural, cocci)球菌 • Rod杆菌 • Spirillum (plural, spirilla)螺菌 • Spirochetes螺旋体 • Appendaged bacteria带附器的细菌 • Filamentous bacteria丝状细菌 3.4 Cell Morphology and the Significance of Being Small
Figure 3.1 Coccus Spirochete Stalk Hypha Rod Budding and appendaged bacteria Spirillum Filamentous bacteria 2012 Pearson Education,Inc
Figure 3.1 Coccus Rod Spirillum Spirochete Stalk Hypha Budding and appendaged bacteria Filamentous bacteria © 2012 Pearson Education, Inc
上泽充通大￥ Shanghai Jiao Tong University The size of microbial cells Prokaryotes vary dramatically in both size and volume from cells smaller than 0.2 um in diameter to those more than 50 um in diameter. Most very large prokaryotes are either sulfur chemolithotrophs or cyanobacteria.多数大型的 原核生物为化能无机营养生物或蓝细菌 Shanghal Jlao Tona Universtty
Shanghai Jiao Tong University The size of microbial cells Prokaryotes vary dramatically in both size and volume from cells smaller than 0.2 m in diameter to those more than 50 m in diameter. Most very large prokaryotes are either sulfur chemolithotrophs or cyanobacteria.多数大型的 原核生物为化能无机营养生物或蓝细菌
上泽克通大学 Shanghai Jiao Tong University Significance of being small (1): metabolism Nutrients and waste products pass more readily into and out of a small cell,thus accelerating cellular metabolism and growth.营养物和代谢 废物更易进出小型细胞，从而加速代谢和生长 Reason:surface-to-volume (S/)ratio Shanghal Jlao Tona Universtty
Shanghai Jiao Tong University Significance of being small (1): metabolism Nutrients and waste products pass more readily into and out of a small cell, thus accelerating cellular metabolism and growth. 营养物和代谢 废物更易进出小型细胞,从而加速代谢和生长. • Reason: surface-to-volume (S/V) ratio