Student worksheet on the eukaryotic cell cycle and cancer, including interactive learning instructions and educational questions.

- Cell division is important for both single-celled and multicellular organisms because they reproduce through cell division.
- Cell division remains important to an adult organism because of cell renewal and healing wounds.
- Differentiation is when cells stop dividing to specialize in structure and function.
- Apoptosis is programmed cell death; its purpose is to eliminate unnecessary cells during development and remove unhealthy or damaged cells in the mature organism.
- Cell cycle regulators are molecular signals that may stimulate or halt cell division, instruct cells to differentiate, or initiate cell death.
- If the cell cycle regulators don't function properly then an organism can end up with too many or too few cells.
- Mitosis
- The rest of the cell cycle is called interphase, during which the cell grows, replicates its DNA, and prepares for division.