To which of the following groups does the
organism in the above figure belong?
a. diplomonads, parabasalids, trypanosomes,
and euglenoids
b. ciliates, dinoflagellates, and apicomplexans
c. water molds, diatoms, and brown algae
d. chlorophyte and charophyte algae
e. amoebas and slime molds
B
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Isolates from an ear swab that are gram-negative coccobacilli grow on chocolate agar in CO2 but not blood agar, require both X and V factors for growth, and are nonhemolytic on rabbit or horse blood may be identified as:
a. H. parainfluenzae. b. H. ducreyi. c. H. aphrophilus. d. H. influenzae.
A marine biologist makes a presentation about crustaceans to your biology class. He explains that he has recently received an NSF grant to study sessile crustaceans. You are only aware of one group of sessile crustaceans. This crustacean must be
A. a lobster. B. a crayfish. C. a shrimp. D. a barnacle. E. the nauplius.
The root-to-shoot water flow in a plant is called the transpiration stream
a. True b. False
In transmission electron microscopy, spreading a specimen out in a thin film with uranyl acetate, which does not penetrate the specimen, is called ________.
A. shadow staining B. freeze-etching C. negative staining D. simple staining