All of the following are mechanisms of antibiotic resistance used by the bacteria EXCEPT
A. Modification of drug absorption by the host
B. Reduction of permeability of drug
C. Modification of drug target in bacteria
D. Export of drug from bacteria
E. Inactivation of drug
Ans: A. Modification of drug absorption by the host
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Which of the following statements is FALSE concerning enrichment bias?
A) Dilution of the inoculum may help to avoid enrichment bias in some cases. B) Enrichment bias is impossible to overcome in some oligotrophic environments. C) Enrichment bias resulted in the underestimation of prokaryotic diversity. D) Enrichment bias favors organisms that grow quickly.
The ocean has mitigated the impact of anthropogenic carbon dioxide production by
A) absorbing 500 billion tons of atmospheric carbon dioxide. B) absorbing over 80% of the trapped heat energy. C) storing 600 billion tons of organic carbon. D) absorbing 500 billion tons of atmospheric carbon dioxide and over 80% of the trapped heat energy.
In a mutualistic relationship with a plant, the fungus receives
a. minerals. b. protection. c. sugar. d. water.
According to a database kept by the HUGO Gene Nomenclature Committee, there are currently six genes in the human genome for different variants of the protein collagen IV
Assuming that all these genes are derived from an ancestral gene, the most precise term for these genes would be ________. A) homeotic B) paralogous C) transcription factors D) structural E) orthologous