After an oil spill, bacteria that can metabolize hydrocarbons are released for bioremediation. After a month, two areas affected by the spill show different levels of improvement. What factor should be measured to determine the difference in effectiveness between the two sites?

A. oxygen levels
B. nutrient levels
C. salinity
D. temperature
E. pH
F. All of these factors may play a role.


Answer: F

Biology & Microbiology

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a. true b. false

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From what environment were Archaea first isolated?

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A yellow jacket, an insect in the order hymenoptera, stung you. Then a wasp, an insect in hymenoptera, stung you as well. A hornet, an insect in hymenoptera, stung you last. It is an observable pattern that all insects in this order must have stingers. The type of reasoning this represents is  

A. deductive reasoning. B. inductive reasoning. C. reductionism. D. comparative reasoning.

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At a minimum, the human immune system is capable of recognizing approximately how many different antigens?

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