Final answer:
Cells that sometimes get stuck in interphase are cells in the Go phase.
Step-by-step explanation:
Cells that sometimes get stuck in interphase are cells in the Go phase. The Go phase is an inactive stage that occurs when cells exit the cell cycle and are not actively preparing to divide.
Some cells enter the Go phase temporarily until they receive an external signal to enter the G1 phase. Other cells, such as mature cardiac muscle and nerve cells, remain in the Go phase permanently.