Which of the following would have the smallest number of hydrogen ions (H+)?
A. A solution with the pH 2
B. A solution with the pH 6
C. A container of acetic acid (vinegar)
D. A container of a strong base
D. A container of a strong base
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Which organism appears clear on MacConkey agar and resembles some colonies of the Enterobacteriaceae family?
a. M. lacunata b. M. lincolnii c. M. canis d. M. nonliquefaciens
Baking bread and making wine are dependent on
fungi belonging to the a. Ascomycetes. b. Zygomycetes. c. Basidiomycetes. d. Chytrids. e. Glomeromycetes.
Which statement about bacteria is FALSE?
a. Some bacteria can photosynthesize. b. Bacteria are important decomposers. c. A small percentage of bacteria are pathogenic. d. Bacteria are not cellular and are sometimes not classified as life forms. e. Bacteria convert atmospheric nitrogen into ammonia and then nitrates that can be used by plants.
What are the two prokaryotic domains?
A. Archaea & Bacteria B. Archaea & Eukarya C. Protista & Archaea D. Eukarya & Bacteria