What is the best explanation for the origin of the unique species recently found in the Annamite Mountains of Vietnam?
A) Temporal isolation
B) Allopatric speciation
C) Adaptive radiation
D) Behavioral isolation
E) Sympatric speciation
B
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E. coli has been isolated and cultured from three different individuals. Upon biochemical testing of these three cultures, you find that there are differences in some reactions. What is the best explanation of these differences?
A. These represent three different species of E. coli. B. This is normal genetic variation seen among strains of E. coli. C. The other two cultures are not really E. coli. D. Mistakes have been made in the test interpretation. E. Two of the cultures are mutants of the other.
What enzymes break down starch, lipids, casein, and gelatin into smaller molecules?
What will be an ideal response?
Flagellates, amoebas, apicomplexans, and ciliates are all what type of protist?
A) slime molds B) protozoans C) dinoflagellates D) seaweeds
Atoms that bear a positive or negative charge are known as:
A. ions B. electrically neutral C. magnetic D. lacking nuclei