Oligotrophic lakes are characterized by
A) low oxygen concentrations.
B) dense "blooms" of algae.
C) low nutrient levels, and clear water with deep penetration of light.
D) high nutrient levels, murky water, and shallow penetration of light.
E) the largest number and diversity of organisms.
C
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A) acridine orange B) DAPI C) GFP D) SYBR ® Green
Two populations that inhabit the same area but remain genetically distinct can best be called
A. species. B. subspecies (races). C. polymorphic. D. allopatric species. E. sympatric species.
The ____ feeds on penguins and other seals
a. Guadalupe fur seal b. elephant seal c. Steller's sea lion d. leopard seal e. harbor seal
Which mechanisms are similar in prokaryotic and eukaryotic transcription of mRNA?
A. processing of mRNA B. recruitment of RNA polymerase to DNA C. RNA synthesis D. transcription termination