Bacteria can increase the Earth's temperature by
A) generating a great deal of heat in metabolism.
B) producing CH4, which is a greenhouse gas.
C) using the greenhouse gas CO2.
D) providing nutrients for plant growth.
E) oxidizing CH4.
B
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A yellow-pigmented, gram-negative rod on blood agar that is oxidase-positive, motile by wet mount, and has the ability to oxidize glucose, xylose, and sucrose is most likely which of the following?
a. Treponema b. Leptospira c. Borrelia d. Sphingomonas
Which scientific field is involved in the identification, classification, and naming of organisms?
A. Phylogeny B. Epidemiology C. Taxonomy D. Pathology E. Nomenclature
In photosynthesis, carbon fixation occurs:
A. during photorespiration B. in photosystem II C. in the Calvin cycle D. in photosystem I E. in the electron transport chain
Media used for coliform enumeration include chemicals that change color depending on the enzymes present in the microbes, thereby allowing a count of total bacteria and total coliforms from a single plate. This type of medium is termed ________.
A. defined B. selective C. complex D. differential