Final answer:
The cell cycle is part of interphase, which includes three stages of cellular activity before entering the mitotic phase that leads to cell division.
Step-by-step explanation:
The cell cycle is part of interphase. Interphase is when the cell undertakes its regular functions, prepares for division, and consists of three stages: G1 (growth), S (DNA synthesis), and G2 (preparation for mitosis). The mitotic phase follows interphase and is comprised of mitosis and cytokinesis, where mitosis includes the phases of prophase, prometaphase, metaphase, anaphase, and telophase, ultimately leading to the division of the cell nucleus and formation of two daughter cells.