The movement that reduces the angle between two bones is called
a. supination.
b. pronation.
c. flexion.
d. extension.
e. adduction.
C
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What might happen to your red blood cells if you were suddenly unable to regulate the solute concentration of your blood and it began to rise?
A. Your blood cells would shrivel because water would move out of the cells via osmosis. B. Your blood cells would stay the same size. C. Your blood cells would enlarge and could rupture because water would move into the cells via osmosis. D. We do not have enough information to answer this question.
Based on comparisons of many human DNA sequences, our level of DNA variation is ____
Fill in the blank with the appropriate word.
Embryonic development begins with a single egg fertilized by a single sperm forming a zygote. The
zygote then undergoes mitosis; how many cells would be present at the conclusion of 4 mitotic divisions?
a. 2 b. 4 c. 8 d. 16 e. 32
The input zone of a motor neuron is the
a. axon. b. axonal endings. c. cell body. d. dendrites. e. cell body and dendrites.