The largest oil spill in the United States was:
a. near Santa Barbara.
b. at Valdez, Alaska.
c. at the Deepwater Horizon rig.
d. on the Hudson river, New York.
e. in San Francisco Bay.
C
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Non-virulent bacteria can be prevented from being transformed into virulent bacteria if the debris from heat-killed virulent bacteria is first treated with: (choose all that apply)
A. DNase. B. RNase. C. protease. D. no enzyme.
Monosaccharides may be characterized by all
EXCEPT which of the following? a. a ketone group b. carbon, hydrogen, and oxygen in a 1:2:1 ratio c. a backbone of five to six carbon atoms d. one carbonyl group e. the presence of glycerol and fatty acids
T cells that react with self antigens are destroyed through:a
cytokinesis. b. macrophages. c. perforins. d. apoptosis. e. receptor mediated endocytosis.
Mitochondria differ from chloroplasts in that mitochondria
A) convert light energy from the sun to chemical energy, whereas chloroplasts convert one form of chemical energy to another.
B) contain three different membrane-bound compartments, whereas chloroplasts contain two.
C) contain membrane folds called cristae, whereas chloroplasts contain disklike vesicles in stacks called grana.
D) are not found in plants, whereas chloroplasts are not found in animals.