BIOL240 Lecture 1: BIOL 240 - CHAPTER 2 BACTERIA
Document Summary
Morphology of bacterial cells: spherical (s. coccus, pl. cocci, rod-shaped (s. bacillus, pl. bacilli, comma-shaped (s. vibrio, pl, spiral (s. spirillum, pl. spirilla, pleiomorphic (varied shapes, generally not a good predictor. Cell morphology of physiology, ecology, or phylogency. Morphology may be determined by surfaces: gliding motility (filaments) Bacteria can also assume multicellular organizations cells: hyphae (branching filaments of, mycelia (tufts of hyphae, trichomes (smooth, unbranched chains of cells) Cell size: nutrient uptake efficiency (surface-to-volume ratio, spirals allow efficient swimming in viscous or turbulent fluids (i. e. near selective forces, prokaryotes are 0. 2 m to > 700 m in diameter. Most rod-shaped bacteria between 0. 5 m-4. 0 m wide and 1-15. Very few large prokaryotes (pro usually smaller than: eukaryotic cells range from 10 m to >200 m. Minimum size simply due to minimum space requirements for genome, proteins, ribosomes: there are exceptions to the general size of bacterial cells. Thiomargarita namibiensis: up to 700 m in diameter!
