It's the sodium ion.
When a neural impulse is fired in both neurons, it is always cause by an excited electron in one neuron moving to the other neuron to destabilize the balance of ions trying to keep them at equilibrium. This action either depolarizes or hyper-polarizes the membrane. If it does, then sodium ions--the key deficient ones--can flow into that region of low charge and maintain that state of low charge, keeping the cell membrane stable.
Both processes would require glycolisis correct me if i'm wrong
Cytoplasm is a jello like substance that hold all the cells organelles in place|
Imaging a fruit cup with jello in it,the fruits in the cup represent organelles and the jello in the cup represents cytoplasm.
D. the number of mates on the island
their appearance changes cause different birds breeding together can make an impact of how the bird looks