Which of the following best describes nerve cells?
- Nerve cells are exceptionally good conductors of electricity (much better than copper wires).
- Nerve cells are similar in their electrical conduction properties to copper wires.
- In comparison to copper wires, nerve cells are relatively poor conductors of electricity.
- Nerve cells are unable to conduct electricity under any circumstances.
- Nerve cells are electron sinks: they absorb many electrons, but no electricity comes out of them.
Answer: 3