The coral reef ecosystem is full of interactions among organisms. Large fish called barracuda feed on smaller fish called parrot fish. The parrot fish feed on algae. Which of these living things would be responsible for releasing oxygen from the process of photosynthesis?

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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