Microtubules Mitochondrion Smooth endoplasmic reticulum Rough endoplasmic reticulum Flagellum Cytoplasmic、 membrane Mitochondrion Ribosomes Microfilaments Peroxisome Lysosome Golgi complex Chloroplast Nuclear envelope Nucleus Nuclear pores Nucleolus Figure 14-1 Brock Biology of Microorganisms 11/e 2006 Pearson Prentice Hall,Inc. Schematic view of a eukaryotic cell
Schematic view of a eukaryotic cell
Nucleus细胞核 Nuclear membrane:consists of a pair of unit membranes. Nuclear membrane contains pores. Nucleolus:an area rich in RNA that is the site of ribosomal RNA synthesis.核仁 Ribosomal proteins synthesized in the cytoplasm are transported into the nucleolus and combined with rRNA to form the small and large subunits (they are then exported to cytoplasm). Chen Feng.Shanghai Jiao Tong University
Chen Feng, Shanghai Jiao Tong University Nucleus细胞核 Nuclear membrane: consists of a pair of unit membranes. Nuclear membrane contains pores. Nucleolus: an area rich in RNA that is the site of ribosomal RNA synthesis.核仁 • Ribosomal proteins synthesized in the cytoplasm are transported into the nucleolus and combined with rRNA to form the small and large subunits (they are then exported to cytoplasm)
18.2 Respiratory Organelles: Mitochondrion Hydrogenosome Mitochondrion线粒体 In aerobic eukaryotic cells the processes of respiration and oxidative phosphorylation are localized here.呼吸与氧化磷酸化场所 Prokaryotic size and rod-shaped or nearly spherical. Its membrane lacks sterols,is much less rigid than eukaryotic cell membrane..膜成份不含固醇 Chen Feng.Shanghai Jiao Tong University
Chen Feng, Shanghai Jiao Tong University 18.2 Respiratory Organelles: Mitochondrion & Hydrogenosome Mitochondrion线粒体 In aerobic eukaryotic cells the processes of respiration and oxidative phosphorylation are localized here.呼吸与氧化磷酸化场所 Prokaryotic size and rod-shaped or nearly spherical. Its membrane lacks sterols, is much less rigid than eukaryotic cell membrane. 膜成份不含固醇
Inner membrane Matrix 基质 嵴 Cristae 2 Porous outer membrane Figure 14-3a Brock Biology of Microorganisms 11/e 2006 Pearson Prentice Hall,Inc. Structure of mitochondrion
Structure of mitochondrion 嵴 基质
Hydrogenosome氢化酶体 Some eukaryotic microorganisms lack mitochondria but contain hydrogenosome. All either obligate or aerotolerant anaerobes whose metabolism is strictly fermentative. Similar size to mitochondria,however,lack TCA cycle enzymes and cristae Oxidation of pyruvate to H2,CO2,and acetate Trichomonas and various ciliated protists have hydrogenosomes 滴虫 Chen Feng.Shanghai Jiao Tong University
Chen Feng, Shanghai Jiao Tong University Hydrogenosome氢化酶体 Some eukaryotic microorganisms lack mitochondria but contain hydrogenosome. • All either obligate or aerotolerant anaerobes whose metabolism is strictly fermentative. Similar size to mitochondria, however, lack TCA cycle enzymes and cristae • Oxidation of pyruvate to H2 , CO2 , and acetate • Trichomonas and various ciliated protists have hydrogenosomes 滴虫