The significance of the cell cycle in cell division lies in its regulatory mechanisms that ensure accurate replication and distribution of genetic material. Composed of phases—G1, S, G2, and M—the cell cycle governs the growth, DNA synthesis, and eventual division of cells. Proper regulation is vital to prevent disorders, such as cancer, which can arise from uncontrolled cell proliferation. Thus, understanding the cell cycle is crucial for advancements in medicine and cellular biology.