All of the following types of culture media are enriched and selective except:
A) blood agar.
B) colistin-nalidixic acid agar.
C) phenylethyl alcohol agar
D) Thayer-Martin agar.
A) blood agar.
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The Crenarchaeota and Euryarchaeota are
A. now classified with the bacteria based on genomic sequence analysis. B. the two phyla of the Archaea. C. very closely related based on 16S rRNA comparisons. D. photosynthetic Archaea.
The growth of microorganisms in a food product is influenced by the availability of
A. moisture. B. acidity. C. nutrients. D. temperature. E. All of the choices are correct.
During implantation, the inner cell mass
develops into two flattened layers of cells called the
a. blastocyst. b. amnion. c. embryonic disk. d. chorion. e. placenta
Why is the total biomass of secondary consumers normally less than that of primary consumers?
What will be an ideal response?