Which statement is a part of the first law of thermodynamics?
a. Energy can be neither created nor destroyed.
b. Energy cannot be transformed.
c. The entropy of the universe is constant.
d. The entropy of the universe is decreasing.
e. Potential energy is the energy of motion.
ANSWER: a
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Which statement about local factors that influence temperature is TRUE?
In DNA, complementary nitrogen bases are held together by
A. nitrogen bonds. B. hydrogen bonds. C. hydrophobic bonds. D. peptide bonds. E. phosphodiester bonds.
According to the theory of evolution, those best adapted to the environment will _____
a. survive and reproduce b. not survive
c. produce offspring that are genetically identical to the parents d. have lower fertility rates e. have fewer offspring on average
In homeostatic control, the ________ compensates for any deviation between the actual value and the set point. In body temperature regulation in mammals, this function is carried out by ________.
A. effector; brain B. effector; skeletal muscle C. sensor; neurons D. integrator; skeletal muscle E. integrator; brain