MIBO 3500E Exam 3 Questions with Correct answers

traditional microbial taxonomy CORRECT ANSWER naming referenced diseases bacteria caused or processes microbes performed (ex. mycobacterium tuberculosis) polyphasic taxonomy CORRECT ANSWER based on genotype, phenotype, and evolutionary (rRNAs) considerations major bacterial groups CORRECT ANSWER deep-branching thermophiles, cyanobacteria, gram-positive bacteria deep branching thermophiles CORRECT ANSWER gram-negative bacteria; earliest diverged from ancestral archaea and eukaryotes; fastest doubling rates of all bacteria; high mutation rate phylum aquificae CORRECT ANSWER "water maker"; oxidize hydrogen gas with molecular oxygen to make water; ether linked membrane lipids Where is phylum aquificae normally found? CORRECT ANSWER In Archaea Thermocrinis ruber CORRECT ANSWER phylum aquificae; grows as a rod in standard lab media; grows as streamers in water current; mat of pink streamers in Yellowstone's Octopus Spring; prefers 82-88C Phylum Thermotogae CORRECT ANSWER "toga"=loosely branched outer membrane; absence of classical outer membrane; mosaic genomes (large chunks of bacterial DNA are similar to archaea) Thermotoga maritima CORRECT ANSWER one of the highest recorded growth temperatures (90C); sheath extends from poles during growth; outer envelope grows, cytoplasmic growth stalls phylum chlorofelxi CORRECT ANSWER participants in microbial mats; don't stain in typical gram negative fashion; diverged later than other phyla; grow as filaments Chloroflexus aurantiacus CORRECT AN