Final answer:
Cells like nerve cells leave the cell cycle and stop dividing when they are in Go phase.
Step-by-step explanation:
When cells like nerve cells are in Go, they leave the cell cycle and stop dividing. Go phase is a quiescent stage that occurs when cells exit the cell cycle and are not actively preparing to divide. Nerve cells, also known as neurons, are an example of cells that remain in Go permanently and do not divide further.