The results of the experiment MOST STRONGLY support which conclusion about the polarity of
lipid molecules?
Lipid molecules are polar because they mix poorly
with liquids, such as water.
Lipid molecules are polar because they adhere
tightly to smooth surfaces, such as paper.
Lipid molecules are nonpolar because they repel
water molecules, which also are nonpolar.
Lipid molecules are nonpolar because they repel
water molecules, which are polar.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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b brown mice / white sand dunes

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.