Single-cell genomics may help us
A) predict which microbes will be abundant based on the environmental conditions.
B) understand the physiology of uncultured microbes.
C) develop better enrichment culture methods.
D) understand the physiology of uncultured microbes and develop better enrichment culture methods.
Answer: D
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Production of sexual spores in ascomycetes occurs in ____
a. basidia b. conidiophores c. sporangia d. asci e. zygospores
Which of the following is the most common type of hydrolysis damage in the cell?
A. deamination of thymidine B. breakage of the glycosidic linkage between the pyrimidines and the DNA backbone C. removal of cytosine from the DNA backbone to create an abasic site D. deamination of cytosine to uracil E. None of the damage types given is known to occur in cells.
Support for the succession mechanism of tolerance is found in research on plant communities that shows
A. that plants release toxins that prevent other species from establishing. B. succession is random and cannot be predicted by existing species. C. climax communities never form as predicted by Clements. D. succession is determined largely by species that exist in the ground as seeds or old roots. E. competition-tolerant species colonize first.
The spores of a fern are
a. produced by mitosis within the sporangium. b. diploid cells. c. the first cells of the gametophyte generation. d. both a and b.