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| Cell Cycle | The series of events that take place in a cell leading to its division and duplication. The main phases of the cell cycle are interphase nuclear division and cytokinesis. |
| Cytokinesis | The final phase of a cell cycle resulting in the division of the cytoplasm. |
| Gamete | A specialized cell (egg or sperm) used in sexual reproduction containing half the normal number of chromosomes of a somatic cell. |
| Interphase | The longest lasting phase of the cell cycle in which a cell performs the majority of its functions such as preparing for nuclear division and cytokinesis. |
| Meiosis | A two phase nuclear division that results in the eventual production of gametes with half the normal number of chromosomes. |
| Mitosis | A nuclear division resulting in the production of two somatic cells having the same genetic complement as the original cell. |
| Organ | An anatomical unit composed of tissues serving a common function. |
| Organ System | An anatomical system composed of a group of organs that work together to perform a specific function or task. |
| Tissue | An anatomical unit composed of cells organized to perform a similar function. |
