BCMB 3100 Study Guide - Midterm Guide: Mollicutes, Osmoprotectant, Firmicutes

• School: University of Georgia
• Department: Biochemistry and Molecular Biology
• Course: BCMB 3100
• Professor: Voreis

Document Summary

Known for extreme radiation resistance (uv and ) Cw contains thick peptidoglycan layer with an outer membrane (stains gram+) Enteric bacteria: rod-shaped, peritrichously flagellated, facultative anaerobe; inhabit gi tract (like e. coli) peritrichously flagellated, facultative anaerobe; inhabit salt water and estuaries diverse metabolically; perform denitrification; diverse habitat: soil bacteria opportunistic pathogens. Isolated from marine/freshwater hydrothermal vents: aquifex: rod-shaped aerobic chemoautotroph. Thermodesulfobacterium: rod- shaped anaerobic chemoheterotroph, unusual membrane lipids: thermotoga: fermentative chemoheterotroph, toga. Include 3 morphologically different groups: endospore formers: include. Bacilli, chlostridia: mycoplasmas: lack a cell wall pleomorphic, actinomycetes: produce many antibiotics; Gram- helical organisms that possess endoflagella (aka periplasmic flagella) Heterocysts allow them to turn off psii so they don"t produce o2 this allows nitrogenase to function properly. Unlike green nonsulfur bacteria, they have photosystem i. Grow well with low light and high sulfide. Most abundant organism in mammalian intestinal tract. Lacks a cw so no peptidoglycan (has an s-layer instead)