The feathers of Sinosauropteryx prima are
hypothesized to have served for
a. flight.
b. insulation.
c. scaring predators.
d. camouflage.
e. sexual attraction
B
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The probability that an ancient species will be represented in the fossil record is a function of:
A. the properties of the organisms themselves, such as whether or not they make hard skeletons. B. the properties of the environments in which they live, such as whether or not burial was likely. C. the properties of the climate in which they live, such as how warm or cold it was. D. the properties of the organisms themselves and the environments in which they live. E. all of the answer options are correct.
Memories are associated with which brain regions?
a. parietal lobe of the cortex b. frontal lobe of the cortex c. parietal-temporal-occipital association cortex d. limbic association cortex e. prefrontal association cortex
A single contraction of all the muscle fibers in a motor unit is known as ____
a. a muscle twitch b. tetanus c. summation d. relaxation coupling e. isometric contraction
The equation, G = H ? TS, predicts that:a
as entropy increases, the amount of free energy decreases. b. as enthalpy increases, the amount of free energy increases. c. as enthalpy decreases, the amount of entropy also decreases. d. metabolism decreases proportionately to anabolism. e. metabolism increases proportionately to catabolism