Prior to 1972, a pesticide called DDT was used widely in the United States, but was found to pose risks to human health and wildlife. It was found that DDT contaminated the waterways. Where would the concentration of the nonpolar pesticide been the highest?
A. a seagull
B. a mosquito larva
C. plankton
D. algae
E. a minnow
A. a seagull
Biology & Microbiology
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Conservation biology is an interdisciplinary science that focuses on ____
a. saving endangered species b. sequencing the DNA of all species on Earth c. cataloging endemic plant species d. researching trigger species e. maintenance and preservation of biodiversity
Biology & Microbiology
Trypsin and chymotrypsin digest
a. fats. b. proteins. c. nucleic acids. d. carbohydrates. e. vitamins.
Biology & Microbiology
What substance would you expect to accumulate in soil as a result of increased acid precipitation?
A. Nitrogen B. Ammonia C. Calcium D. Oxygen
Biology & Microbiology
If a cofactor is not protein but another kind of organic molecule it is called a(n)
A. regulator lipid. B. coenzyme. C. substrate. D. catalyst.
Biology & Microbiology