BIOL 43900 Study Guide - Midterm Guide: Facultative Anaerobic Organism, Gram Staining, Anaerobic Respiration
26 Nov 2017
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Blood agar: forms black colonies due to tellurite serving as an. Gram stain: stain violet (g+), scattered club shaped bacilli. Streptomyces sp. - largest genus of actinobacteria, antibiotic-producing, long hair-like filaments, form branches, form little balls in broth due to filaments clumping together, aerobic. Bacillus thurigiensis- gram positive, spore-forming, endospore cells lyse, Tsa: round, puffy looking colonies, centers are opaque because. Klebsiella pneumonia- form capsule in medium but not in broth because it doesn t have a surface to attach to, gram-negative, facultatively anaerobic, lactose-fermenting, bacilli. Gram stain: clear ring around cells is capsule, pink (g-) Escherichia coli- facultative anaerobe, gram-negative, bacilli, coliforms fermentation. Emb agar: metallic green colonies from ph indicator, lactose. Proteus vulgaris- does not have swarming motility, facultative anaerobe, bacilli. Serratia marcescens- bacilli, g- (red), temperature sensitive, produces red native pigment. Pseudomonas aeruginosa- bacilli, g-, respond to oxidative damage, lives on moist skin. Pseudomonas putida (tol plasmid)- bacilli, g-, used for bioremediation.
