Organisms that derive their energy and carbon from organic compounds are __________
A. photoautotrophs
B. chemoheterotrophs
C. photoheterotrophs
D. chemoautotrophs
E. chemolithotrophs
Answer Key: B
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Some human infants, especially those born prematurely, suffer serious respiratory failure because of _____
A) the sudden change from the uterine environment to the air B) the overproduction of surfactants C) the incomplete development of the lung surface D) lung collapse due to inadequate production of surfactant E) mutations in the genes involved in lung formation
Which one of the following is not part of the scientific method?
A. experimentation B. theory C. prediction D. fact E. hypothesis
Salinity is expressed in parts per
a. hundred. b. thousand. c. ten thousand. d. hundred thousand. e. million.
The pathway on the left is named for what is happening in the figure labeled with letter ____
a. A b. B c. C d. D e. E