Assess the merits of each action potential analogy; select the representation that corresponds most accurately.
A. An action potential happens like a ripple in a pond; a ripple spreads out and gets slightly weaker as it travels.
B. An action potential happens like a row of dominoes falling; the signal has constant velocity and constant strength no matter how long the row of dominoes may be.
C. An action potential happens like a crowd doing the wave in a football stadium; the enthusiasm and volume increase as more people get involved.
B. An action potential happens like a row of dominoes falling; the signal has constant velocity and constant strength no matter how long the row of dominoes may be.
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What is the core theme that unifies all of biology?
A. The flow of information from DNA to proteins B. The relationship between structure and function C. The theory of evolution by natural selection D. The transformation of energy and matter
Temperature is perhaps the most important factor in the distribution of organisms because
A. water is more scarce in warmer environments. B. most organisms are unable to regulate their body temperature precisely. C. many organisms are able to grow faster in warmer climates. D. the metabolic optimum for endothermic animals is in temperate areas. E. wind amplifies the effect of cool temperatures.
What type of chemical bond forms during a dehydration synthesis reaction?
A. Covalent B. Ionic C. Hydrogen D. Polymer
A new community that develops in a disturbed site where the soil that supported a previous community remains is known as ________.
Fill in the blank(s) with the appropriate word(s).