It forms a protective and adaptive barrier around a cell and this keeps various bacterial and viral intruders out. They also help in keeping cell systems inside the cell. The shell absorbs viruses and bacteria for nutrients when they do not have a certain strand to get inside the cell or trick it otherwise. Hope this helped!
A neuron has a resting potential of about 70mV (millivolts)
Newtons Law of motion
HOPE IT HELPS:)