Interphase is the phase of the cell cycle where a cell prepares for division. It consists of three main stages: G1 phase, where the cell grows and synthesizes proteins; S phase, where DNA is replicated; and G2 phase, where the cell continues to grow and prepares for mitosis. During interphase, the cell is not actively dividing but is busy carrying out its normal functions. This phase is crucial for ensuring that the cell has all the necessary components and genetic material before it enters mitosis, the process of cell division. Interphase can last for varying lengths of time, depending on the type of cell and its environment.