Use the graph to answer the questions. 1. What happens to the membrane potential after 5 ms?
2. At the peak point, when the membrane potential is 40mV, does the cell have an overall negative charge or positive charge?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material