Which of the following is true of animal proteins?
A) All are complete.
B) All are incomplete.
C) Most are complete.
D) Most are incomplete.
C
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A piece of pizza is normally a net radiator of energy when its temperature is
A. higher than its surroundings. B. lower than its surroundings. C. neither of these D. not enough information
Muscles are connected to bones via
A. motor neurons. B. tendons. C. acetylcholine. D. joints.
During the last 750,000 years
A) Earth has had at least two ice ages. B) ice volume changes have been highest in the Southern Hemisphere. C) there has been a pattern of roughly 100,000-year cycles in climate change. D) there has been little change in climate.
Which of the sites on this cross section would be the most likely place for a spring?
A. A B. B C. C D. D