Oxidase-positive, glucose-positive (oxidatively) gram-negative bacilli that cannot grow on MacConkey agar include:
a. Pseudomonas.
b. Vibrio.
c. Stenotrophomonas.
d. Sphingomonas.
D
All of these characteristics can be used to describe Sphingomonas.
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In chemolithotrophic Archaea, H2 is a common electron donor
Indicate whether the statement is true or false.
____ are cells that lay the framework for new phloem and xylem in vascular plants. Prior to the differentiation of these cells, their precursors transported auxin out of immature leaves
Fill in the blank with the appropriate word.
In a plant, the exchange of gases with the environment involves
a. leaves. b. roots. c. stems. d. all of these
Which bacterial organism has a complex life cycle that involves gliding motility, swarming, and aggregation to form fruiting bodies coordinated by quorum sensing, followed by differentiation into spores?
a. myxobacteria b. Treponema c. mixotrophs d. Leptothrix