The Metal________ Must Be Present in the Medium for Chemolithotrophic

Q22: Mud, lake water, or a sewage sample

Q23: Methane produced in the anoxic regions of

Q24: A gram- negative, nonsporulating rod that is

Q25: Most bioluminescent bacteria are found in marine

Q26: Cytoplasmic extrusions can minimize sinking of aquatic

Q28: Members of the genus _can be isolated

Q29: Type I methanotrophs<br>A) possess bundles of disc-

Q30: Explain the significant ecological role played by

Q31: Which of the following does NOT apply

Q32: Proteobacteria are all gram- negative.