Reduction of nitrogen-oxygen ions and compounds by some bacteria is called
A. aerobic respiration.
B. denitrification.
C. deamination.
D. nitrification.
E. fermentation.
Answer: B
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Cell division is regulated by:
A. growth factor signals. B. signals that indicate a sufficient size of the cell. C. signals that indicate that DNA has been replicated. D. signals about the nutritional status of the cell. E. All of these choices are correct.
Complex structures called fruiting bodies are a characteristic of
A. Clostridia. B. myxobacteria. C. Streptomyces. D. lactic acid bacteria.
Euglena and dinoflagellates have chloroplasts and flagella. This indicates they are
A. multicellular. B. mobile. C. photosynthetic. D. photosynthetic and mobile. E. multicellular and mobile.
When bread gets moldy with visible black or blue spots, you are looking at masses of the colored:a
thalli. b. spores. c. hyphae. d. mycelia. e. ascocarps.