Johnny found a weird rock in the middle of the desert. He noticed that the rock was darker than the rest of the rocks. He also noticed that the rock was heavier than the other rocks around hit. When he
took out a magnet, the rock was attracted to the magnet. He knows that this area has been known to
contain rocks that have come through the atmosphere from space. What do you think Johnny found in
the desert?

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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the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

it’s lava came from an explosive eruption

a. to encourage apoptosis