The life cycle of the Chinese liver fluke goes through which of the following sequences in its life history?
A. adult, shelled embryo, miracidium, cercaria, sporocyst, rediae, metacercaria, adult
B. adult, shelled embryo, miracidium, sporocyst, rediae, cercaria, metacercaria, adult
C. adult, shelled embryo, miracidium, metacercaria, sporocyst, rediae, cercaria, adult
D. adult, miracidium, sporocyst, rediae, cercaria, metacercaria, shelled embryo, adult
E. adult, shelled embryo, sporocyst, rediae, cercaria, metacercaria, miracidium, adult
B. adult, shelled embryo, miracidium, sporocyst, rediae, cercaria, metacercaria, adult
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Effector molecules
A) are associated with the induction of enzyme synthesis. B) are associated with the repression of enzyme synthesis. C) induce conformational changes. D) are often small organic molecules. E) all of the above
The missing product below is
A. O2
B. CO2
C. H2O
One type of weak chemical interaction occurs when two molecules having partial electrical charges of opposite polarity form an intermolecular attraction. These interactions are called:
A. ionic bonds. B. hydrogen bonds. C. hydrophobic interactions. D. van der Waals interactions. E. covalent bonds.
California's most extensive ecosystem, the ____ biome, is dominated by drought-resistant, fire-adapted shrubs with
small, leathery leaves.
a. temperate deciduous forest b. prairie c. desert d. chaparral e. savannah