Chaper 3 The Prokaryotes Section 1 bacteria Section 2 Actinomycetes Section 3 Cyanobacteria Section 4 Archaeobacteria Section 5 Other prokaryotes
Chaper 3 The Prokaryotes Section 1 Bacteria Section 2 Actinomycetes Section 3 Cyanobacteria Section 4 Archaeobacteria Section 5 Other prokaryotes
Bacteria Size, Shape, and Arrangement of Bacterial Cells Most bacteria fall within a range Cm=10-2meter mm=10-3meter from 0.2 to 2.0 um in diameter um=10-6meter and from 2 to Sum in length. nm=10-9meter They have a few basic shapes-spherical coccus (plural, cocci, meaning berries), rod-shaped bacillus(plural, bacilli, meaning little staffs), and spIra
Size, Shape, and Arrangement of Bacterial Cells Most bacteria fall within a range from 0.2 to 2.0 μm in diameter and from 2 to 8μm in length. They have a few basic shapes-spherical coccus (plural, cocci, meaning berries), rod-shaped bacillus (plural, bacilli, meaning little staffs), and spiral. Cm = 10-2 meter mm = 10-3 meter μm = 10-6 meter nm = 10-9 meter Bacteria
Representative Cell Shapes(Morphology) in Prokaryotes Coccus Spirochete Budding and appendaged bacteria
How to identify an unknown bacterial species? The thousands of species of bacteria are differentiated by many factors, including morphology(shape), chemical composition (often detected by staining reactions) nutritional requirements biochemical activities, and source of energy(sunlight or chemicals)
The thousands of species of bacteria are differentiated by many factors, including morphology (shape), chemical composition (often detected by staining reactions), nutritional requirements, biochemical activities, and source of energy (sunlight or chemicals). How to identify an unknown bacterial species ?
Arrangement of Spherical Bacterial Cells diplococci sarcinae streptococci staphylococci Tetrad tetracocci Spherical coccus
Arrangement of Spherical Bacterial Cells diplococci streptococci tetracocci sarcinae staphylococci Spherical coccus