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
C
M. canis is a nonlactose fermenter, appears clear on MacConkey agar, and resembles some colo-nies of the Enterobacteriaceae family.
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The one-way flow of air along parabronchi makes what type of gas exchange mechanism possible, at least theoretically?
A) the same as that occurring in fish gills B) the same as that occurring in insect tracheae C) the same as that occurring in mammalian lungs D) the same as that occurring in echinoderm skin gills
Which of the following molecules would most likely require a transport protein to cross the plasma membrane of a red blood cell?
A. CO2 B. H2O C. O2 D. C6H12O6
Crystal-clear mountain lakes are oligotrophic
Indicate whether the statement is true or false.
Habitat is best described as:
a. the local environment in which a species lives. b. what a species eats. c. what competes with a species. d. the abiotic components of a species' environment. e. the totality of adaptations by a species to its environment.