Chapter 15

Which phylum contains the bulk of known gram-negative bacteria? What subgroup of this phylum contains the bacterium Escherichia coli? Which contains Pseudomonas aeruginosa? (Sections 15.1-15.5)

What morphological and physiological features distinguish Burkholderia cepacia from Pseudomonas aeruginosa? In what common environments might these organisms be encountered? (Sections 15.2, 15.4)

What major physiological property unites species of Thermotoga, Aquifex, and Thermocrinis? (Sections 15.18, 15.19)