PPT-Introduction to Bacteria

USDA NIFSI Food Safety in the Classroom University of Tennessee Knoxville 2006 What are bacteria Single celled organisms Very small Need a microscope to see Can be found on most materials and surfaces. Monera. Learning Objectives. Name 3 types of bacterial cell. Explain reproduction of bacteria. Explain nutrition of bacteria. State the factors affecting growth of micro-organisms. Define the term pathogenic. Christina . Machak. HMC 2012. Originally named “non-sulfur” because it was thought that they could not use sulfide as electron donor. Can tolerate small concentrations of sulfur, but much lower than green and purple sulfur bacteria. High Concentrations of H. Derya. . Ozuolmez. HMC 2012. Sulfate reducers,. Strict . anaerobes. ,. Belong to 4 phylogenetic lineages;. Delta-. proteobacteria. , . thermophilic. . Gram (-) bacteria. , . Gram (+) . bacteria, . Euryarchaeota. Biology CP. What is Bacteria?. Prokaryotic. Can be: . Eubacteria. Archaebacteria. What is Bacteria?. Prokaryotic: does NOT have a nucleus. Can be: . Eubacteria. Archaebacteria. What is Bacteria?. Prokaryotic: does NOT have a nucleus. Mrs. Stewart. Medical Interventions. Central Magnet School. Bacteria and Antibiotics. Essential Questions:. How do antibiotics work?. How do bacterial cells gain resistance?. 2 Classes of Bacteria. Gram (-) . dead fish, . i. love you,. but you’re bringing me down. b. acterial bioluminescence. Is interesting. Diverse . Vibrios. . in the sea. Goal: to isolate bioluminescent bacteria for further study. strategy. Helpful Bacteria. Most bacteria are harmless to humans.. Many are useful:. Aid in digestion. Provide nutrients for plants by breaking down dead material by decomposition. Provide drugs and hormones. Provide some types of food.. Bacteriology. Kingdom of bacteria. Sub-kingdom: . Eubacteria. Sub-kingdom: Cyanobacteria . Nomenclature. Binomial. (scientific) nomenclature . Genus. – . always . capitalized. species. . -, . lowercase. Structure and Function. 2. Prokaryote & Eukaryote. Evolution. 3. Cellular Evolution. Current evidence indicates that . eukaryotes evolved from prokaryotes. between 1 and 1.5 billion years ago. Two theories:. Biology and Biotechnology department. A large number of bacteria . are . motile. . . . Most possess one or more . flagella on their surface . that allow . them to swim. .. The . pattern of . flagellation. Dr. Yasir . A. Hussein, MD, Microbiology & Pathology. . Update, September 2016. Overview. . Introduction to anaerobic bacteria.. Types of . anaerobic . 2. Prokaryote & Eukaryote. Evolution. 3. Cellular Evolution. Current evidence indicates that . eukaryotes evolved from prokaryotes. between 1 and 1.5 billion years ago. Two theories:. 1. . Infolding theory. The Good, the Bad and the Ugly…. What are bacteria?. Unicellular (single-celled) organisms. Prokaryotic (no nucleus). Microscopic (very small). Can be found on most materials and surfaces. Billions on and in your . E. coliTotal coliformTotal coliform = Environmental contaminationFecal coliformFecal coliform and E. coli = Fecal contaminationE. coli O157:H7 You should test for coliform bacteria at least once a yea